| Value | Category | Cases | |
|---|---|---|---|
| 2008 | 467 |
1.6%
|
|
| 2009 | 5415 |
18.7%
|
|
| 2010 | 2037 |
7.1%
|
|
| 2011 | 6022 |
20.8%
|
|
| 2012 | 2801 |
9.7%
|
|
| 2013 | 7193 |
24.9%
|
|
| 2014 | 1273 |
4.4%
|
|
| 2015 | 3580 |
12.4%
|
|
| 2016 | 103 |
0.4%
|
|
| Sysmiss | 359 |