| Value | Category | Cases | |
|---|---|---|---|
| -99 | DK | 0 |
0%
|
| -88 | Missing | 0 |
0%
|
| -77 | NA | 0 |
0%
|
| 2001 | 1576 |
99.9%
|
|
| 2002 | 1 |
0.1%
|