| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1999 | 2 |
0.6%
|
| 2 | 2003 | 1 |
0.3%
|
| 3 | 2004 | 2 |
0.6%
|
| 4 | 2006 | 5 |
1.5%
|
| 5 | 2007 | 3 |
0.9%
|
| 6 | 2008 | 4 |
1.2%
|
| 7 | 2009 | 3 |
0.9%
|
| 8 | 2010 | 11 |
3.4%
|
| 9 | 2011 | 15 |
4.6%
|
| 10 | 2012 | 24 |
7.3%
|
| 11 | 2013 | 42 |
12.8%
|
| 12 | 2014 | 78 |
23.8%
|
| 13 | 2015 | 137 |
41.8%
|
| 14 | 2016 | 1 |
0.3%
|
| Sysmiss | 9532 |