| Value | Category | Cases | |
|---|---|---|---|
| 1978 | 1 |
5.3%
|
|
| 1983 | 1 |
5.3%
|
|
| 1986 | 1 |
5.3%
|
|
| 1992 | 3 |
15.8%
|
|
| 1993 | 2 |
10.5%
|
|
| 1994 | 2 |
10.5%
|
|
| 1999 | 1 |
5.3%
|
|
| 2003 | 1 |
5.3%
|
|
| 2004 | 1 |
5.3%
|
|
| 2010 | 2 |
10.5%
|
|
| 2011 | 2 |
10.5%
|
|
| 2013 | 1 |
5.3%
|
|
| 2015 | 1 |
5.3%
|
|
| Sysmiss | 12247 |