| Value | Category | Cases | |
|---|---|---|---|
| 0 | Less than 1 year | 3544 |
8.9%
|
| 1 | Completed 1 year | 3005 |
7.5%
|
| 2 | Completed 2 years | 2969 |
7.5%
|
| 3 | Completed 3 years | 2454 |
6.2%
|
| 4 | Completed 4 years | 2587 |
6.5%
|
| 5 | Completed 5 years | 3608 |
9.1%
|
| 6 | Completed 6 years | 2840 |
7.1%
|
| 7 | Completed 7 years | 1450 |
3.6%
|
| 8 | Completed 8 years | 1719 |
4.3%
|
| 9 | Completed 9 years or more | 15660 |
39.3%
|