| Value | Category | Cases | |
|---|---|---|---|
| 5 | 1 |
0%
|
|
| 2000 | 3 |
0.1%
|
|
| 2001 | 87 |
2.1%
|
|
| 2002 | 359 |
8.7%
|
|
| 2003 | 580 |
14%
|
|
| 2004 | 810 |
19.6%
|
|
| 2005 | 1579 |
38.2%
|
|
| 2006 | 481 |
11.6%
|
|
| 9998 | 2 |
0%
|
|
| 9999 | Missing | 227 |
5.5%
|
| Sysmiss | 18383 |