| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1804 |
98.4%
|
|
| 1 | 1 |
0.1%
|
|
| 2 | 1 |
0.1%
|
|
| 3 | 3 |
0.2%
|
|
| 4 | 2 |
0.1%
|
|
| 5 | 1 |
0.1%
|
|
| 6 | 1 |
0.1%
|
|
| 8 | 1 |
0.1%
|
|
| 77 | Don't know | 20 |
1.1%
|
| Sysmiss | 6351 |