| Value | Category | Cases | |
|---|---|---|---|
| 1985 | 1 |
1%
|
|
| 2002 | 1 |
1%
|
|
| 2003 | 1 |
1%
|
|
| 2004 | 1 |
1%
|
|
| 2005 | 2 |
2.1%
|
|
| 2008 | 1 |
1%
|
|
| 2009 | 2 |
2.1%
|
|
| 2010 | 3 |
3.1%
|
|
| 2011 | 14 |
14.6%
|
|
| 2012 | 20 |
20.8%
|
|
| 2013 | 13 |
13.5%
|
|
| 2014 | 29 |
30.2%
|
|
| 2015 | 8 |
8.3%
|