| Value | Category | Cases | |
|---|---|---|---|
| 1994 | 2 |
2%
|
|
| 1995 | 1 |
1%
|
|
| 2000 | 3 |
3.1%
|
|
| 2005 | 1 |
1%
|
|
| 2006 | 4 |
4.1%
|
|
| 2007 | 6 |
6.1%
|
|
| 2008 | 12 |
12.2%
|
|
| 2009 | 16 |
16.3%
|
|
| 2010 | 22 |
22.4%
|
|
| 2011 | 15 |
15.3%
|
|
| 2012 | 16 |
16.3%
|
|
| Sysmiss | 365 |