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

Retrieve the content of the cell located in the 18th row and the 1st column of this table. The target cell value should be presented in the JSON format of {"row_id":"m", "column_id":"n", "cell_value":"<Corresponding Cell Value>"}, e.g., {"row_id":"10", "column_id":"3", "cell_value":"District"}.

The target cell value in the 18th row and the 1st column is {"row_id":"18", "column_id":"1", "cell_value":"non-aboriginal"}.