| Value | Category | Cases | |
|---|---|---|---|
| 1 | less than 12 months | 1552 |
33.1%
|
| 2 | 12-23 months | 777 |
16.5%
|
| 3 | 2 years or more | 2361 |
50.3%
|
| 9 | 5 |
0.1%
|
|
| 11 | .Z | 14059 |