| Value | Category | Cases | |
|---|---|---|---|
| 1972 | 1 |
1.8%
|
|
| 1993 | 2 |
3.6%
|
|
| 1998 | 1 |
1.8%
|
|
| 2000 | 1 |
1.8%
|
|
| 2001 | 1 |
1.8%
|
|
| 2002 | 1 |
1.8%
|
|
| 2004 | 2 |
3.6%
|
|
| 2005 | 1 |
1.8%
|
|
| 2008 | 2 |
3.6%
|
|
| 2009 | 1 |
1.8%
|
|
| 2010 | 1 |
1.8%
|
|
| 2011 | 2 |
3.6%
|
|
| 2012 | 1 |
1.8%
|
|
| 2013 | 2 |
3.6%
|
|
| 2014 | 2 |
3.6%
|
|
| 2015 | 3 |
5.5%
|
|
| 2016 | 8 |
14.5%
|
|
| 2017 | 12 |
21.8%
|
|
| 2018 | 3 |
5.5%
|
|
| 9999 | 8 |
14.5%
|
|
| Sysmiss | 2583 |