| Value | Category | Cases | |
|---|---|---|---|
| 0 | 4 |
0%
|
|
| 1 | Local | 11579 |
90.4%
|
| 2 | From unspecified sources | 1020 |
8%
|
| 3 | Improved | 152 |
1.2%
|
| 4 | Mixed | 53 |
0.4%
|
| 9 | 2 |
0%
|
|
| Sysmiss | 222 |