| Value | Category | Cases | |
|---|---|---|---|
| 1987 | 1 |
0.3%
|
|
| 1991 | 1 |
0.3%
|
|
| 1992 | 1 |
0.3%
|
|
| 1993 | 2 |
0.6%
|
|
| 1995 | 5 |
1.4%
|
|
| 1996 | 2 |
0.6%
|
|
| 1997 | 3 |
0.8%
|
|
| 1998 | 7 |
2%
|
|
| 1999 | 25 |
7%
|
|
| 2000 | 21 |
5.9%
|
|
| 2001 | 30 |
8.4%
|
|
| 2002 | 16 |
4.5%
|
|
| 2003 | 19 |
5.3%
|
|
| 2004 | 15 |
4.2%
|
|
| 2005 | 17 |
4.8%
|
|
| 2006 | 15 |
4.2%
|
|
| 2007 | 30 |
8.4%
|
|
| 2008 | 62 |
17.4%
|
|
| 2009 | 30 |
8.4%
|
|
| 2010 | 46 |
12.9%
|
|
| 2011 | 8 |
2.2%
|
|
| 2014 | 1 |
0.3%
|
|
| Sysmiss | 435 |