| Value | Category | Cases | |
|---|---|---|---|
| 0 | less than 1 year | 111 |
0.4%
|
| 1 | 1190 |
3.9%
|
|
| 2 | 3382 |
11%
|
|
| 3 | 4209 |
13.6%
|
|
| 4 | 4178 |
13.5%
|
|
| 5 | 3416 |
11.1%
|
|
| 6 | 2527 |
8.2%
|
|
| 7 | 3513 |
11.4%
|
|
| 8 | 2324 |
7.5%
|
|
| 9 | 2808 |
9.1%
|
|
| 10 | 725 |
2.3%
|
|
| 11 | 598 |
1.9%
|
|
| 12 | 1846 |
6%
|
|
| 98 | don't know | 33 |
0.1%
|
| 99 | 20 |
0.1%
|
|
| 101 | .Z | 6631 |