| Value | Category | Cases | |
|---|---|---|---|
| 1997 | 44 |
0.2%
|
|
| 1998 | 5 |
0%
|
|
| 1999 | 16 |
0.1%
|
|
| 2000 | 4 |
0%
|
|
| 2001 | 3 |
0%
|
|
| 2002 | 4 |
0%
|
|
| 2003 | 3 |
0%
|
|
| 2004 | 28 |
0.1%
|
|
| 2005 | 46 |
0.2%
|
|
| 2006 | 47 |
0.2%
|
|
| 2007 | 554 |
2.7%
|
|
| 2008 | 8304 |
39.8%
|
|
| 2009 | 9566 |
45.8%
|
|
| 2010 | 529 |
2.5%
|
|
| 2011 | 169 |
0.8%
|
|
| 2012 | 255 |
1.2%
|
|
| 2013 | 195 |
0.9%
|
|
| 2014 | 424 |
2%
|
|
| 2015 | 658 |
3.2%
|
|
| 2016 | 26 |
0.1%
|
|
| Sysmiss | 140586 |