| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
0%
|
|
| 2001 | 2 |
0%
|
|
| 2004 | 4 |
0%
|
|
| 2005 | 5 |
0%
|
|
| 2006 | 9039 |
45.5%
|
|
| 2007 | 10800 |
54.4%
|
|
| 9999 | 11 |
0.1%
|
|
| Sysmiss | 1495 |