Table III-1 Average Number of Prefectures Respondents Have Lived In

1. By Age

All Household Members	Household Head/ Spouse	Previous Survey (Household Head / Spouse)
Total	27,917	17,630	19,297
0-4	1.07	-	-
5-9	1.18	-	-
10-14	1.24	-	-
15-19	1.33	1.97	1.90
20-24	1.58	2.05	1.98
25-29	1.71	1.96	2.06
30-34	1.88	2.00	2.12
35-39	2.03	2.15	2.08
40-44	2.08	2.17	2.08
45-49	2.07	2.13	2.17
50-54	2.12	2.17	2.17
55-59	2.09	2.12	2.25
60-64	2.15	2.18	2.19
65-69	2.11	2.12	2.06
70-74	1.96	2.02	2.05
75-79	1.79	1.86	2.12
80-84	1.82	1.95	2.21
85+	1.89	2.05	2.11

2.By Sex

All Household Members	Household Head/ Spouse	Previous Survey (Household Head / Spouse)
Male	1.93	2.24	2.27
Female	1.72	1.94	1.99

3. By Residential Region

All Household Members	Household Head/ Spouse	Previous Survey (Household Head / Spouse)
Hokkaido	1.43	1.57	1.48
Tohoku	1.77	2.01	1.79
Kita-Kanto	1.93	2.24	1.94
Tokyo Area	2.00	2.35	2.53
Chubu/Hokuriku	1.76	1.99	1.82
Chukyo Area	1.67	1.91	2.02
Osaka Area	1.88	2.12	2.12
Keihan Area	1.65	1.84	2.17
Chugoku	1.71	1.91	2.05
Shikoku	1.79	2.00	1.98
Kyusyu/Okinawa	1.79	2.04	2.14

Abroad is counted as one location. For regional composition, see Table I-1.

heads and spouses by age between this survey and the previous one shows that the values for the 15-24 and 35-44 age groups have significantly increased, while they have significantly decreased for the 25-34, 55-59 and 75-84 age groups. Moreover, the averages by present residential region show that the values increased in Chubu and Hokuriku and the eastern areas except for Tokyo, but on the other hand the value decreased in many regions in the Chubu and western parts of the country.

### 2. Regions Respondents Have Lived In

Table III-2, Figure III-3, and Table III-3 present percentages of respondents who have ever lived in the large metropolitan area and regions. Here, the large metropolitan area is defined as an area that includes the three largest metropolitan areas (Tokyo, Chukyo, and Osaka). Table III-2 shows that 62.6% of people have lived in the large metropolitan area when the analysis includes all household members. The percentage is higher for males than for females. Data by age show that the percentage is high among those aged 50-64 and 35-44, who were in the latter half of their teens and their 20s during Japan's economic growth period and during the asset-inflated bubble economy period, respectively. The high share of the latter age group in the large metropolitan area may be explained by them being the second generation of the large number of people who migrated to the large metropolitan areas during the economic growth period. The corresponding values for household heads and spouses are slightly higher than those of all household members, but the trends by sex and age are the same.

A comparison of the values for household heads and spouses with those of the previous survey reveals that both the percentages of the total number and the percentages by sex increased slightly. The percentage by age dropped for ages 25-34, but shows an overall upward trend in other age groups. The percentage of respondents who have lived in the large metropolitan area is influenced, as explained above, by the socio-economic conditions during the period in which they were adolescents as well as by the regional distribution of their birth place. Therefore, the percentage varies depending on the individual cohort in question. The differences in the percentages by age between this and the previous survey are influenced by the recent migration conditions between the large metropolitan area and non-metropolitan areas, but some of the differences may be attributable to the respondents' migration experience in their