| Value | Category | Cases | |
|---|---|---|---|
| 0 | Less than 1 year | 3158 |
7.4%
|
| 1 | Completed 1 year | 4048 |
9.5%
|
| 2 | Completed 2 years | 4300 |
10%
|
| 3 | Completed 3 years | 3620 |
8.5%
|
| 4 | Completed 4 years | 2635 |
6.2%
|
| 5 | Completed 5 years | 3914 |
9.1%
|
| 6 | Completed 6 years | 1715 |
4%
|
| 7 | Completed 7 years | 1143 |
2.7%
|
| 8 | Completed 8 years | 1051 |
2.5%
|
| 9 | Completed 9 years or more | 17223 |
40.2%
|