| Value | Category | Cases | |
|---|---|---|---|
| 1995 | 4 |
1.9%
|
|
| 1996 | 1 |
0.5%
|
|
| 1997 | 2 |
1%
|
|
| 1998 | 2 |
1%
|
|
| 1999 | 1 |
0.5%
|
|
| 2000 | 8 |
3.8%
|
|
| 2001 | 5 |
2.4%
|
|
| 2002 | 5 |
2.4%
|
|
| 2003 | 5 |
2.4%
|
|
| 2004 | 9 |
4.3%
|
|
| 2005 | 6 |
2.9%
|
|
| 2006 | 14 |
6.7%
|
|
| 2007 | 8 |
3.8%
|
|
| 2008 | 19 |
9.1%
|
|
| 2009 | 24 |
11.5%
|
|
| 2010 | 21 |
10%
|
|
| 2011 | 29 |
13.9%
|
|
| 2012 | 22 |
10.5%
|
|
| 2013 | 17 |
8.1%
|
|
| 9998 | NSP | 7 |
3.3%
|
| Sysmiss | 9799 |