Table:
low income
total
canadian-born
immigrant

female
male
female
male
female
male

percentage

total age groups

visible minority
21.9
21.1
19.3
18.5
22.0
21.0

not a visible minority
14.3
12.2
14.2
12.2
14.3
12.3

under 15 years

visible minority
25.4
25.2
22.3
21.8
34.3
36.2

not a visible minority
15.2
15.2
14.9
14.9
26.1
25.7

15 to 24 years

visible minority
26.3
26.2
18.6
17.9
29.2
28.6

not a visible minority
15.8
13.7
15.4
13.3
20.8
18.7

25 to 54 years

visible minority
20.7
19.3
12.6
11.1
21.3
19.8

not a visible minority
12.7
11.2
12.5
10.9
14.3
13.7

55 to 64 years

visible minority
17.1
16.8
17.3
16.9
17.0
16.7

not a visible minority
14.4
13.2
14.5
13.2
13.4
13.1

65 years and over

visible minority
17.3
14.3
15.1
9.8
17.4
14.4

not a visible minority
16.2
9.5
17.1
10.0
12.9
7.4

For the table shown in this image, can you tell me the row and column numbers of this table? Return the result as JSON in the format {"row_number": "m", "column_number": "n"}, e.g., {"row_number": "12", "column_number": "7"}.

There are 21 rows and 7 columns in the table. So, the final answer is {"row_number": "21", "column_number": "7"}.