| Value | Category | Cases | |
|---|---|---|---|
| 0 | Less than 1 year | 1215 |
4.1%
|
| 1 | Completed 1 year | 1920 |
6.5%
|
| 2 | Completed 2 years | 2965 |
10%
|
| 3 | Completed 3 years | 2937 |
9.9%
|
| 4 | Completed 4 years | 2345 |
7.9%
|
| 5 | Completed 5 years | 3696 |
12.5%
|
| 6 | Completed 6 years | 1913 |
6.5%
|
| 7 | Completed 7 years | 1225 |
4.1%
|
| 8 | Completed 8 years | 925 |
3.1%
|
| 9 | Completed 9 years or more | 10393 |
35.2%
|