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A2: Experiment of interest: log(wages)
Log(wages) of young cohort−Log(wages) of old cohort

Educ.of young cohort−Educ. of old cohort

5
4
3
2
1
0
−1

0

2
4
6
8
10
Number of INPRES schools per capita

0
−0.2
−0.4
−0.6
−0.8
−1

0

B1: Control experiment: education

B2: Control experiment: log(wages)
Log(wages) of old cohort−Log(wages) of very old cohort

Educ. of old cohort−Educ. of very old cohort

4
2
0
−2
−4
−6

0

2
4
6
8
10
Number of INPRES schools per capita

2
4
6
8
10
Number of INPRES schools per capita

0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8

0

2
4
6
8
10
Number of INPRES schools per capita

Figure 1: Regional growth in education and log wages accross cohort and program intensity(Per capita denotes per 1000 children)

44

FIGURE 2 -- COEFFICIENT OF THE INTERACTIONS AGE IN 1974* PROGRAM
INTENSITY IN THE REGION OF BIRTH
IN THE EDUCATION EQUATION

0.3

0.2

0.1

0
23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2
-0.1

-0.2

Age in 1974

FIGURE 3A -- COEFFICIENTS OF THE INTERACTION AGE IN 1974* PROGRAM INTENSITY
IN THE REGION OF BIRTH
IN THE WAGE AND EDUCATION EQUATIONS
0.25

0.2

0.15

0.1

0.05

0

-0.05

-0.1
24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

Age in 1974

educationlog(wage)

FIGURE 3B -- COEFFICIENTS OF THE INTERACTION AGE IN 1974* PROGRAM INTENSITY IN
THE REGION OF BIRTH
IN THE WAGE AND EDUCATION EQUATIONS (SMOOTHED)
0.2

0.03

0.025
0.15
0.02
0.1

0.015

0.01

0.05

0.005
0
0

-0.05

-0.005
23

22

21

20

19

18

17

16

15

14

13

12

11

10

Age in 1974

educationlog(wage)

9

8

7

6

5

4

3

FIGURE 5 -- CDF OF EDUCATION, LOW PROGRAMREGIONFIGURE 4 -- CDF OF EDUCATION, HIGH PROGRAM REGION

1.2
1.2

1
1

0.8
0.8

0.6
0.6

0.4

0.4

0.2

0.2

0

0
0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

0

19

1

2

3

4

5

Years of education

6

7

8

9

10

11

12

13

14

15

16

17

18

19

Years of education
12 to 17 in 1974

12 to 17 in 1974
2 to 6 in 1974

2 to 6 in 1974

FIGURE 6 -- BETWEEN COHORT DIFFERENCES IN CDF OFEDUCATION

FIGURE 7 -- DIFFERENCE IN DIFFERENCES IN CDF (WITH 95%
CONFIDENCE INTERVAL)

0.25
0.1

0.08

0.2
0.06

0.04

0.15
0.02

0

0.1

-0.02

0.05

-0.04

-0.06

0
0

1

2

3

4

5

6

7

8

High level

9

10

11

12

13

14

15

16

17

18

19

-0.08

20

0

1

2

3

4

5

6

7

8

9

10

11

Low level

FIGURE 8 -- DIFFERENCE IN DIFFERENCES IN CDF (ESTIMATED
FROM LINEAR PROBABILITY MODEL) WITH 95% CONFIDENCE
INTERVAL
0.08

0.06

0.04

0.02

0

-0.02

-0.04
0

12

Years of education

2

4

6

8

10

12

Years of education

14

16

18

20

13

14

15

16

17

18

19

FIGURE 9 -- COEFFICIENTS OF THE INTERACTIONS AGE IN 1974* PROGRAM INTENSITY IN THE REGION
OF BIRTH IN THE WAGE AND EDUCATION EQUATION (SAMPLE: INDIVIDUALS WHO COMPLETED MORE
THAN 9 YEARS OF EDUCATION)
0.15

0.1

0.05

0

-0.05

-0.1
24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

Age in 1974

educationlog(wage)

FIGURE 10 -- RETURNS TO EACH YEAR OF EDUCATION (OLS ESTIMATE)
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0

1

2

3

4

5

6

7

8

9

10

Years of education

11

12

13

14

15

16

17

18

19

FIGURE 11 -- ANNUAL COSTS AND BENEFITS OF THE PROGRAM(MILLION 1990 US DOLLARS)

2500
2000
1500
1000
500
0

2057

2061

2065

2061

2065

2053

2049

2045

2041

2037

2057

_____ Annual benefits

2033

2029

2025

2021

2017

2013

2009

2005

2001

1997

1993

1989

1985

1981

1977

1973

-500

- - - - Annual costs

FIGURE 12 -- DISCOUNTED SUM OF PROGRAM’S NET BENEFIT(MILLION 1990 US DOLLARS)
8000

6000

4000

2000

0

-2000

-4000

Assumptions: Deadweight burden: 0.2. GDP growth after 1973: 2%. Program
effect is estimated without controlling for enrolment rate (table 5, columns 7).

2053

2049

2045

2041

2037

2033

2029

2025

2021

2017

2013

2009

2005

2001

1997

1993

1989

1985

1981

1977

1973

-6000

TABLE 1 -- DESCRIPTIVE STATISTICS
Mean
Panel A: Individual Level Means
Education (whole sample N=152,989)
Education (sample with valid wage data N=60,663)
INPRES schools built for 1000 children
INPRES schools built for 1000 children (sample with valid wage data)
INPRES schools built for 1000 children (High program regions)
INPRES schools built for 1000 children (Low program regions)
Log(hourly wage)
Monthly earnings (SUPAS 1995),thousands Rupiah
Monthly earnings (SUSENAS 1993) of wage earners, thousands Rupiah
Monthly earnings (SUSENAS 1993) of self-employed individuals, thousands Rupiah

7.98
9.00
1.98
1.89
2.44
1.54
6.87
13
205
152

Panel B: District Level Means (N=293)
INPRES schools constructed (1973/74 - 1978/79)
INPRES schools constructed for 1000 children (1973/74 - 1978/79)
Number of teachers in 1973/74
Number of teachers in 1978/79
Number of schools in 1973/74
Fraction of the population attending schools in 1971 (census)
Enrollment rate in primary school in 1973 (Ministry of education and culture)

222
2.34
1530
2082
219
0.174
0.68

Panel C: Indonesian Family Life Survey, Individuals Born Between 1950 and 1972
(all numbers are in percentage)
Proportion of individuals having migrated between birth and age 12
Proportion of people having repeated at least one grade in primary school
Proportion of people completin more than primary having repeated at least one grade in primary school
Proportion of individuals having attended primary school after age 12 (estimated)
Proportion of individuals having attended primary school after age 13 (estimated)
Proportion of individuals born 1950-1961 , completing primary or less, who left school after 1974
Proportion of individuals born 1962-1966 , completing primary or less, who left school after 1974
Sources: IFLS, SUPAS, SUSENAS, INPRES instruction, Census (1971), Ministry of Education and Culture.

8.5
20
6.0
15.8
6.8
2.8
24.5

TABLE 2 -- THE ALLOCATION OF SCHOOLS

log(INPRES schools)
Log of number of children aged 5-14 in the region
Log(1-enrollment rate in primary school in 1973)

0.78(0.027)0.12(0.038)

Number of observations
255
R squared
0.78
Notes: Standard errors are in parentheses.
The dependent variable in the log of the number of INPRES schools built
between 1973 and 1978.
The enrollment rate in primary school is the number of children enrolled inprimary school in 1973 (obtained from the Ministry of education and Culture)divided by the number of children aged 5-14 in the region in 1973

TABLE 3 -- MEANS OF EDUCATION AND LOG(WAGE) BY COHORT AND LEVEL OF PROGRAM CELLS

Years of education
Level of program in
High
(1)

Log(wages)
Level of program in

Region of birth
Low
Difference
(2)
(3)

High
(4)

Region of birth
Low
Difference(5)(6)

Panel A: Experiment of Interest
Aged 2 to 6 in 1974

8.49
(0.043)9.76(0.037)-1.27(0.057)6.61(0.0078)

6.73(0.0064)-0.12(0.010)Aged 12 to 17 in 1974

8.02
(0.053)9.40(0.042)-1.39(0.067)6.87(0.0085)7.02(0.0069)-0.15(0.011)

Difference

0.47(0.070)0.36(0.038)0.12(0.089)-0.26(0.011)-0.29(0.0096)0.026(0.015)

Aged 12 to 17 in 1974

8.00
(0.054)9.41(0.042)-1.41(0.078)6.87(0.0085)7.02(0.0069)-0.15(0.011)

Aged 18 to 24 in 1974

7.70
(0.059)9.12(0.044)-1.42(0.072)6.92(0.0097)7.08(0.0076)-0.16(0.012)Difference

0.30(0.080)0.29(0.061)

0.013(0.098)0.056(0.013)0.063(0.010)0.0070(0.016)

Panel B: Control Experiment

Note: The sample is made of the individuals who earn a wage. Standard errors are in parentheses

TABLE 4 -- EFFECT OF THE PROGRAM ON EDUCATION AND WAGES: COEFFICIENTS OF THE INTERACTIONS BETWEEN COHORT DUMMIESAND THE NUMBER OF SCHOOLS CONSTRUCTED PER 1000 CHILDREN IN THE REGION OF BIRTH.

Observations

Dependent variable
Years of education
(1)
(2)
(3)
(4)

Log(hourly wage)(5)(6)

PANEL A: Experiment of Interest: Individuals Aged 2 to 6 or 12 to 17 in 1974
(Youngest Cohort: Individuals Ages 2 to 6 in 1974)

Whole sample

78,4700.124(0.0250)0.15(0.0260)

0.188(0.0289)

Sample of wage earners

31,061

0.196(0.0424)0.199(0.0429)

0.259(0.0499)0.0093(0.0260)

0.0176(0.0271)

0.0075(0.0297)

0.0147(0.00729)

0.0172(0.00737)

0.0270(0.00850)

PANEL B: Control Experiment : Individuals Aged 12 to 24 in 1974
(Youngest Cohort: Individuals Ages 12 to 17 in 1974)

Whole sample

78,488Sample of wage earners

30,225

0.012

0.024

0.079

0.00310.00399

0.0144(0.0474)(0.0481)(0.0555)(0.00798)(0.00809)(0.00915)

No
No

Yes
No

Yes
Yes

No
No

Yes
No

Yes
Yes

Control variables:

Year of birth*enrollment rate in 1971
Year of birth* water and sanitation program

Notes: All specifications include region of birth, year of birth dummies and interactions between the year of birth dummies and the number of children in theregion of birth (in 1971). The numbers of observations refer to the specification in columns 1 and 4.
Standard errors are in parentheses.

TABLE 5 -- EFFECT OF THE PROGRAM ON EDUCATION AND WAGES: COEFFICIENTS OF THE INTERACTIONS BETWEEN DUMMIESINDICATING AGE IN 1974 AND THE NUMBER OF SCHOOLS PER 1000 CHILDREN IN REGION OF BIRTH

Dependent variable: years of education
Age in 1974

(1)

Whole sample(2)

Dependent variable: log(hourly wage)

Sample of wage earners
(3)

(4)

(5)

(6)

(7)

(8)

(9)

12

-0.035(0.047)-0.025(0.048)0.002(0.054)-0.040(0.077)-0.010(0.078)0.009(0.091)0.016(0.013)0.019(0.013)0.027(0.015)11

0.011(0.046)0.025(0.047)0.018(0.051)

0.008(0.073)0.014(0.074)-0.003(0.083)-0.014(0.012)-0.013(0.013)-0.009(0.014)10

0.059(0.047)0.049(0.049)0.078(0.054)0.10(0.075)0.092(0.076)0.13(0.090)0.0036(0.013)0.0042(0.013)0.0059(0.015)90.14(0.039)0.14(0.041)0.15(0.044)0.067(0.065)0.063(0.066)0.17(0.077)0.0095(0.011)0.010(0.011)0.018(0.013)8

0.088(0.049)0.11(0.050)0.11(0.054)0.19(0.078)0.20(0.079)0.28(0.089)0.019(0.013)0.021(0.013)0.027(0.015)7

0.12(0.044)0.14(0.046)0.16(0.051)

0.11(0.072)0.13(0.073)0.16(0.084)-0.0095(0.012)-0.0049(0.012)0.0066(0.014)6

0.14(0.042)0.17(0.044)0.26(0.049)0.23(0.070)0.23(0.070)0.32(0.084)0.011(0.012)0.013(0.012)0.018(0.014)5

0.10(0.043)0.13(0.045)0.13(0.050)0.14(0.075)0.16(0.075)0.27(0.088)0.021(0.013)0.023(0.013)0.052(0.015)4

0.11(0.039)0.12(0.041)0.18(0.046)0.19(0.069)0.19(0.069)0.29(0.082)0.019(0.012)0.020(0.012)0.038(0.014)3

0.11(0.044)0.14(0.046)0.20(0.053)0.15(0.079)0.17(0.080)0.30(0.097)0.0079(0.013)0.013(0.014)0.027(0.016)2

0.14(0.041)0.19(0.043)0.19(0.049)0.20(0.073)0.22(0.074)0.25(0.088)0.016(0.012)0.023(0.013)0.040(0.015)

No
No

Yes
No

Yes
Yes

No
No

Yes
No

Yes
Yes

No
No

Yes
No

Yes
Yes

4.03
0.19
152,989

5.18
0.19
152,495

6.15
0.17
143,1072.70
0.14
60,6332.74
0.14
60,4664.38
0.13
55,1441.13
0.14
60,6331.29
0.15
60,4662.05
0.13
55,144Control variables:
Year of birth*enrollment rate in 1971
Year of birth*water and sanitation program

F-statistic
R-squared
Obervations

Notes: All specifications include region of birth and year of birth dummies and year of birth dummies interacted with population in 1971
Standard errors are in parentheses. The F-statistics test the hypothesis that the coefficients of the interaction between the year of birth dummies and the program intensity in theregion of birth are jointly zero.
The control group is the group of people who were 13 to 24 in 1974.

TABLE 6 -- EFFECT OF EDUCATION ON LABOR MARKET OUTCOMES. OLS AND 2SLS ESTIMATES

MethodInstrument

(1)

(2)

(3)

(4)

PANEL A: Sample of Individuals Who Work for a WagePANEL A1: Dependent variable: log(hourly wage)
OLS

0.0776(0.000620)

0.0777(0.000621)

0.0767(0.000646)

2SLS

Year of birth dummies* program intensity in region of birth

0.0675(0.0280)[0.96]

0.0809(0.0272)
[0.9]

0.106
(0.0222)[0.93]

2SLS(Aged 2-6 in 1974)*program intensity in region of birth0.0752(0.0338)

0.0862(0.0336)0.104(0.0304)

0.0698(0.000601)

0.0698(0.000602)

0.0689(0.000628)

0.0756(0.0280)[0.73]

0.0925(0.0278)[0.63]

0.0913(0.0219)[0.58]

0.0328(0.00311)

0.0327(0.000311)

0.0337(0.000319)

0.101(0.0210)[0.66]

0.118(0.0197)[0.93]

0.0892(0.0162)[1.12]PANEL B2: Dependent variable: log(monthly earnings), imputed for self-employed individuals
OLS
0.05390.0539(0.000354)(0.000354)

0.0539(0.000355)

0.0908(0.0541)[0.9]

PANEL A2: Dependent variable: log(monthly earnings)
OLS
2SLS

Year of birth dummies* program intensity in region of birth

0.134(0.0631)[0.7]

PANEL B: Complete Sample
PANEL B1: Dependent variable: participation in the wage sector
OLS
2SLS

2SLS

Year of birth dummies* program intensity in region of birthYear of birth dummies* program intensity in region of birth

Control variables:
Year of birth*enrollment rate in 1971
Year of birth* water and sanitation program
Propensity score, propensity score squared

0.0509(0.0157)[0.68]

0.0745(0.0136)[0.58]

0.0346(0.0138)[1.16]

No
No
No

Yes
No
No

Yes
Yes
No

Yes
No
Yes

Notes: Year of birth dummies, region of birth dummies and the interactions betweeen year of birth dummies and the number of children in the regionof birth in 1971 are included in the regressions. Standard errors are in parenthesis. F-statistics of the test of overidentification restrictions are insquared brackets.

TABLE 7 -- PROGRAM EFFECT AND RETURNS TO EDUCATION BY CATEGORIES OF REGION OF BIRTH

Characteristics of region of birthDensity

Whole sample(1)<median(2)

1976 Poverty>median
(3)

High
(4)

Low
(5)

0.13
(0.058)Pre-program education<median(6)>median(7)

0.083(0.035)0.14(0.040)0.13(0.036)-0.00083(0.0094)

0.028(0.013)0.0046(0.0095)

0.10
No(0.028) First stage[0.88]

0.12(0.032)[0.72]

0.029(0.052)PANEL A: Effect of the Program on Education.

Dependent variable: Years of education. Sample: individuals ages 2 to 6 or 12 to 17 in 1974
Interaction(2-6 in 1974)*program intensity in region of birth

0.15(0.026)0.19(0.035)-0.014(0.048)PANEL B: Effect of the Program on Wages.

Dependent variable: log(hourly wage). Sample: individuals ages 2 to 6 or 12 to 17 in 1974 (wage earners)
Interaction(2-6 in 1974)*program intensity in region of birth

0.017(0.0074)

0.032(0.011)-0.00084(0.012)0.051(0.017)PANEL C: Returns to Education.

Dependent variable: log (hourly wage). Sample: wage earners
Years of education

0.078(0.00062)

[0.9]

0.11
No
(0.026) First stage[0.86][0.83]

Notes: Region of birth dummies, year of birth dummies, and interactions of year of birth dummies and the number of children and the enrollment rate in
the region in 1971 are included in the regressions.
The median density (the density for the region of birth for the median person in the weighted sample) is 308 habitants per square kilometer.
The high poverty provinces are the provinces where the proportion of people consuming less than 1,500 Rp per capita is larger than the national average (11.3%) for rural regions.
(in the 1976 SUSENAS). I define as "high poverty" districts the rural districts in these provinces, which are: Lampung, Central Java, Jogyakarta, East Java, East Nusa Tenggara,
Central Sulawesi, South Sulawesi, Southeast Sulawesi, Maluku, Irian Jaya. Source: World Bank (1979).
The pre-program education is the average education in the region of birth for people born in 1962 or before. The median is 3.18 years.
Standard errors in parenthesis, F-statistics of the overidentification test in squared brackets.

TABLE 8 -- EVALUATION OF THE PROGRAM’S NET RETURN(1)

Deadweight loss coefficient
0.2
0.6
(2)
(3)

(4)

PANEL A: Results
Control for Year of birth*enrollment rate
First year where benefit>costs (discount rate=5%)
In annual value:
In discounted sum

No

1996
2005

Yes

No

1997
2009

1997
2005

Discounted sum of net benefits in 2050 (g after 1997=5%, discount rate 5%)
In million 1990 US$
13,025
13,096
As a fraction of Indonesia’s GDP in 1973
0.30
0.36
Divided by initial costs
24.1
24.2

11,3400.31
21.0

18,8070.52
35.0

Discounted sum of net benefits in 2050 (g after 1997=2%, discount rate 5%)
In milllion 1990 US$
6,691
11,589As a fraction of Indonesia’s GDP in 1973
0.18
0.32
Divided by initial costs
12.4
21.4

5,008
0.14
9.26

9,905
0.27
18.3

Discounted sum of net benefits in 2050 (g from 1973= 2%, discount rate 5 %)-631.6
1200-2315
In million 1990 US$-0.0170.033-0.063As a fraction of Indonesia’s GDP in 1973
-1.16
2.22
-4.28
Divided by initial costs-483-0.013-0.89

Internal rate of return
g after 1997=5%g after 1997=2%
g from 1973=2%

0.105
0.09150.04670.102
0.088
0.0443

1996
2002

Yes

0.118
0.106
0.059

0.08950.07500.0326PANEL B: Assumptions and Parameters
Population growth rate after 1997
Yearly teacher salary in 1973 (1990 US $)Yearly teachers salary in 1995 (1990 US $)Total recurrent costs/teacher salary
Total cost of construction (million 1990 US $)Number of school constructedLife time of the schools (years)
Share of labor income in GDP

0.015
363
2,467
1.25
522
61,80020
0.7

Note: The estimates underlying these calculations are taken from table 5 (columns 7 and 8).
Program effect has been set to 0 for children aged 7 or older in 1974.
The internal rate of return is the interest rate such that the net present value of the project at infinity is 0.

TABLE A1 -- UNRESTRICTED ESTIMATES OF PROGRAM EFFECT: COEFFICIENTS OF THE INTERACTION BETWEENAGE IN 1974 AND THE NUMBER OF SCHOOLS PER 1000 CHILDREN BUILT IN THE REGION OF BIRTH(1)

Education
(2)

(3)

(4)

Log(wage)(5)(6)

Age in 1974
23

-0.072-0.83-0.15-0.007-0.012-0.013(0.074)(0.077)(0.086)(0.023)(0.023)(0.026)22
0.012-0.0024-0.0350.00240.00390.13(0.068)(0.071)(0.079)(0.022)(0.022)(0.025)
21
0.067
0.059
0.033
0.017
0.019
0.027
(0.066)(0.070)(0.077)(0.021)(0.021)(0.024)
20
0.039
0.014
-0.038-0.015-0.0052-0.02(0.066)(0.070)(0.077)(0.021)(0.021)(0.024)
19
0.048
0.051
0.03
0.02
0.24
0.045
(0.061)(0.065)(0.072)(0.021)(0.021)(0.023)
18
0.011
0.032
-0.003-0.0032
0.00270.022(0.067)(0.070)(0.077)(0.021)(0.021)(0.024)
17
0.087
0.068
0.031
0.03700.01
0.023(0.065)(0.069)(0.076)(0.021)(0.021)(0.023)16-0.021-0.007-0.0810.00120.00430.015(0.062)(0.066)(0.073)(0.020)(0.020)(0.023)15-0.03-0.025-0.086-0.01-0.00910.0047(0.063)(0.067)(0.074)(0.020)(0.020)(0.023)
14
0.081
0.088
0.072
0.019
0.023
0.052
(0.058)(0.062)(0.069)(0.019)(0.019)(0.022)
13
0.064
0.071
0.014
-0.0057 0.000054
0.016(0.069)(0.071)(0.079)(0.022)(0.022)(0.024)12-0.0067
0.0024-0.009
0.019
0.025
0.045
(0.064)(0.067)(0.075)(0.020)(0.020)(0.023)
11
0.039
0.052
0.0073-0.011-0.0067
0.0095(0.062)(0.066)(0.073)(0.019)(0.020)(0.022)
10
0.087
0.077
0.067
0.001
0.011
0.024
(0.064)(0.067)(0.075)(0.020)(0.020)(0.023)
9
0.17
0.17
0.14
0.012
0.016
0.036
(0.058)(0.062)(0.068)(0.019)(0.019)(0.021)
8
0.12
0.13
0.1
0.022
0.027
0.045
(0.065)(0.068)(0.075)(0.020)(0.020)(0.023)
7
0.15
0.17
0.15
-0.00680.00130.025(0.062)(0.066)(0.073)(0.019)(0.020)(0.022)
6
0.17
0.2
0.24
0.014
0.02
0.036
(0.060)(0.064)(0.071)(0.019)(0.019)(0.022)
5
0.13
0.16
0.12
0.024
0.029
0.07
(0.061)(0.064)(0.072)(0.020)(0.020)(0.023)
4
0.14
0.15
0.16
0.021
0.027
0.056
(0.058)(0.062)(0.069)(0.019)(0.019)(0.022)
3
0.14
0.17
0.19
0.011
0.019
0.045
(0.062)(0.066)(0.074)(0.020)(0.020)(0.024)
2
0.17
0.22
0.18
0.018
0.029
0.058
(0.059)(0.063)0.071(0.019)(0.020)(0.023)
Year of birth* 1971 enrollment rate
No
Yes
Yes
No
Yes
Yes
Year of birth* water and sanitation
No
No
Yes
No
No
Yes
R squared
0.19
0.19
0.17
0.14
0.15
0.14
Observations
152,989
152,495
143,10760,20860,46655,144
Notes: Standard errors are in parentheses. All regressions include year of birth dummies, region of birth dummies,
and year of birth dummies interacted with number of children in 1971. The omitted group is the group aged 24 in 1974.