| قيمة | فئة | حالات | |
|---|---|---|---|
| 0 | Less than one year | 255 |
1.5%
|
| 1 | 714 |
4.2%
|
|
| 2 | 1883 |
10.9%
|
|
| 3 | 9759 |
56.7%
|
|
| 4 | 3215 |
18.7%
|
|
| 5 | 645 |
3.8%
|
|
| 6 | 718 |
4.2%
|
|
| 7 | 11 |
0.1%
|
|
| Sysmiss | 4067 |