| Value | Category | Cases | |
|---|---|---|---|
| 1985 | 1 |
0.4%
|
|
| 1994 | 1 |
0.4%
|
|
| 1995 | 1 |
0.4%
|
|
| 1997 | 1 |
0.4%
|
|
| 2000 | 1 |
0.4%
|
|
| 2001 | 1 |
0.4%
|
|
| 2005 | 2 |
0.7%
|
|
| 2007 | 2 |
0.7%
|
|
| 2008 | 2 |
0.7%
|
|
| 2010 | 3 |
1.1%
|
|
| 2011 | 17 |
6.2%
|
|
| 2012 | 65 |
23.6%
|
|
| 2013 | 120 |
43.5%
|
|
| 2014 | 41 |
14.9%
|
|
| 2015 | 6 |
2.2%
|
|
| 2016 | 6 |
2.2%
|
|
| 2017 | 2 |
0.7%
|
|
| 2018 | 2 |
0.7%
|
|
| 2019 | 1 |
0.4%
|
|
| 2021 | 1 |
0.4%
|
|
| Sysmiss | 524 |