| Value | Category | Cases | |
|---|---|---|---|
| 0 | Less than 1 year | 1898 |
1.8%
|
| 1 | Completed 1 year | 3797 |
3.6%
|
| 2 | Completed 2 years | 5606 |
5.4%
|
| 3 | Completed 3 years | 6490 |
6.2%
|
| 4 | Completed 4 years | 6099 |
5.8%
|
| 5 | Completed 5 years | 11343 |
10.9%
|
| 6 | Completed 6 years | 6609 |
6.3%
|
| 7 | Completed 7 years | 5842 |
5.6%
|
| 8 | Completed 8 years | 5159 |
4.9%
|
| 9 | Completed 9 years or more | 51584 |
49.4%
|