Table:
selected characteristics
total custody
total community supervision
total correctional services

number
percent of total
number
percent of total
number
percent of total

age

12 years
69
1
87
1
156
1

13 years
293
4
393
4
686
4

14 years
723
10
794
9
1,517
9

15 years
1,309
18
1,466
16
2,775
17

16 years
2,020
27
2,066
22
4,086
25

17 years
2,397
33
2,480
27
4,877
29

18 years and older
549
7
2,014
22
2,563
15

unknown age
1
0
3
0
4
0

sex

male
5,625
76
7,113
76
12,738
76

female
1,732
24
2,169
23
3,901
23

unknown sex
4
0
21
0
25
0

aboriginal identity

aboriginal
3,541
48
3,653
39
7,194
43

non-aboriginal
3,621
49
5,009
54
8,630
52

unknown
199
3
641
7
840
5

total-all jurisdictions
7,361
100
9,303
100
16,664
100

Could you count the number of rows and columns in this table? Present the final answer in a JSON format {"row_number": "m", "column_number": "n"} such as {"row_number": "2", "column_number": "3"}.

This table has 20 rows and 7 columns. Thus, the final answer is {"row_number": "20", "column_number": "7"}.