| Value | Category | Cases | |
|---|---|---|---|
| 2003 | 1 |
2.5%
|
|
| 2004 | 1 |
2.5%
|
|
| 2005 | 2 |
5%
|
|
| 2006 | 1 |
2.5%
|
|
| 2010 | 4 |
10%
|
|
| 2011 | 3 |
7.5%
|
|
| 2012 | 4 |
10%
|
|
| 2013 | 7 |
17.5%
|
|
| 2014 | 7 |
17.5%
|
|
| 2015 | 10 |
25%
|
|
| Sysmiss | 2588 |