| Value | Category | Cases | |
|---|---|---|---|
| 1998 | 1 |
2.4%
|
|
| 1999 | 1 |
2.4%
|
|
| 2000 | 1 |
2.4%
|
|
| 2006 | 1 |
2.4%
|
|
| 2009 | 1 |
2.4%
|
|
| 2012 | 2 |
4.9%
|
|
| 2013 | 1 |
2.4%
|
|
| 2014 | 5 |
12.2%
|
|
| 2015 | 3 |
7.3%
|
|
| 2016 | 5 |
12.2%
|
|
| 2017 | 4 |
9.8%
|
|
| 2018 | 9 |
22%
|
|
| 2019 | 7 |
17.1%
|
|
| Sysmiss | 2186 |