| Value | Category | Cases | |
|---|---|---|---|
| 0 | less than 1 year | 43 |
0.4%
|
| 1 | 317 |
2.9%
|
|
| 2 | 982 |
9%
|
|
| 3 | 1220 |
11.2%
|
|
| 4 | 1409 |
12.9%
|
|
| 5 | 1211 |
11.1%
|
|
| 6 | 981 |
9%
|
|
| 7 | 1255 |
11.5%
|
|
| 8 | 914 |
8.4%
|
|
| 9 | 1095 |
10%
|
|
| 10 | 315 |
2.9%
|
|
| 11 | 290 |
2.7%
|
|
| 12 | 866 |
7.9%
|
|
| 98 | don't know | 13 |
0.1%
|
| 99 | 5 |
0%
|
|
| 101 | .Z | 7838 |