| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 year | 1758 |
43.8%
|
| 2 | 1-2 | 1193 |
29.7%
|
| 3 | 3-4 | 566 |
14.1%
|
| 4 | 5-7 | 228 |
5.7%
|
| 5 | 8-10 | 114 |
2.8%
|
| 6 | 11-13 | 89 |
2.2%
|
| 7 | 14+ | 57 |
1.4%
|
| 9 | Not Specified | 7 |
0.2%
|