| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Yes | 524904 |
12.1%
|
| 2 | 2. No | 3639359 |
83.9%
|
| 3 | 3. Do not know | 18674 |
0.4%
|
| 9 | 9. Unspecified | 154760 |
3.6%
|
| Sysmiss | 80897 |