| Value | Category | Cases | |
|---|---|---|---|
| 1985 | 1 |
3.4%
|
|
| 1990 | 2 |
6.9%
|
|
| 1992 | 1 |
3.4%
|
|
| 1996 | 1 |
3.4%
|
|
| 1997 | 1 |
3.4%
|
|
| 1998 | 1 |
3.4%
|
|
| 1999 | 1 |
3.4%
|
|
| 2003 | 2 |
6.9%
|
|
| 2008 | 1 |
3.4%
|
|
| 2009 | 2 |
6.9%
|
|
| 2011 | 1 |
3.4%
|
|
| 2012 | 1 |
3.4%
|
|
| 2015 | 3 |
10.3%
|
|
| 2016 | 1 |
3.4%
|
|
| 2017 | 3 |
10.3%
|
|
| 2018 | 5 |
17.2%
|
|
| 2019 | 2 |
6.9%
|
|
| Sysmiss | 50447 |