| Value | Category | Cases | |
|---|---|---|---|
| 0 | Less than one year | 8 |
2.5%
|
| 1 | 21 |
6.5%
|
|
| 2 | 32 |
9.9%
|
|
| 3 | 31 |
9.6%
|
|
| 4 | 31 |
9.6%
|
|
| 5 | 47 |
14.6%
|
|
| 6 | 25 |
7.7%
|
|
| 7 | 16 |
5%
|
|
| 8 | 16 |
5%
|
|
| 9 | 5 |
1.5%
|
|
| 10 | 27 |
8.4%
|
|
| 11 | 6 |
1.9%
|
|
| 12 | 13 |
4%
|
|
| 13 | 7 |
2.2%
|
|
| 14 | 8 |
2.5%
|
|
| 15 | 4 |
1.2%
|
|
| 16 | 2 |
0.6%
|
|
| 18 | 12 |
3.7%
|
|
| 20 | 6 |
1.9%
|
|
| 21 | 1 |
0.3%
|
|
| 23 | 1 |
0.3%
|
|
| 25 | 2 |
0.6%
|
|
| 28 | 1 |
0.3%
|
|
| 29 | 1 |
0.3%
|
|
| Sysmiss | 1910 |