| Value | Category | Cases | |
|---|---|---|---|
| -95 | Missing | 0 |
0%
|
| 1995 | 1 |
1.1%
|
|
| 2005 | 2 |
2.2%
|
|
| 2006 | 16 |
17.4%
|
|
| 2007 | 6 |
6.5%
|
|
| 2008 | 11 |
12%
|
|
| 2009 | 10 |
10.9%
|
|
| 2010 | 38 |
41.3%
|
|
| 2011 | 8 |
8.7%
|
|
| Sysmiss | 118 |