| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 40 |
13.3%
|
|
| 2010 | 30 |
10%
|
|
| 2011 | 140 |
46.7%
|
|
| 2012 | 31 |
10.3%
|
|
| 2013 | 11 |
3.7%
|
|
| 2014 | 2 |
0.7%
|
|
| 2015 | 17 |
5.7%
|
|
| 2016 | 14 |
4.7%
|
|
| 2017 | 3 |
1%
|
|
| 2018 | 4 |
1.3%
|
|
| Missing value | 8 |
2.7%
|