| Value | Category | Cases | |
|---|---|---|---|
| 1998 | 4 |
0.3%
|
|
| 1999 | 12 |
0.8%
|
|
| 2000 | 22 |
1.5%
|
|
| 2001 | 40 |
2.7%
|
|
| 2002 | 64 |
4.3%
|
|
| 2003 | 83 |
5.6%
|
|
| 2004 | 84 |
5.7%
|
|
| 2005 | 107 |
7.2%
|
|
| 2006 | 119 |
8%
|
|
| 2007 | 116 |
7.8%
|
|
| 2008 | 114 |
7.7%
|
|
| 2009 | 157 |
10.6%
|
|
| 2010 | 134 |
9.1%
|
|
| 2011 | 136 |
9.2%
|
|
| 2012 | 155 |
10.5%
|
|
| 2013 | 129 |
8.7%
|
|
| 2014 | 4 |
0.3%
|
|
| Sysmiss | 9436 |