| Value | Category | Cases | |
|---|---|---|---|
| Duration is not specified | 32 |
0.6%
|
|
| Less than a year | 20 |
0.4%
|
|
| 1 | 16 |
0.3%
|
|
| 2 | 5 |
0.1%
|
|
| 3 | 4 |
0.1%
|
|
| 4 | 1 |
0%
|
|
| 5 | 6 |
0.1%
|
|
| 6 | 1 |
0%
|
|
| 9 | 3 |
0.1%
|
|
| 10 | 2 |
0%
|
|
| 20 | 1 |
0%
|
|
| 2000 | 1 |
0%
|
|
| Missing value | 5152 |
98.2%
|