| Value | Category | Cases | |
|---|---|---|---|
| 0 | 330 |
86.6%
|
|
| 2003 | 1 |
0.3%
|
|
| 2004 | 1 |
0.3%
|
|
| 2005 | 3 |
0.8%
|
|
| 2007 | 1 |
0.3%
|
|
| 2010 | 1 |
0.3%
|
|
| 2013 | 2 |
0.5%
|
|
| 2014 | 4 |
1%
|
|
| 2015 | 8 |
2.1%
|
|
| 2016 | 9 |
2.4%
|
|
| 2017 | 16 |
4.2%
|
|
| 2018 | 5 |
1.3%
|
|
| Sysmiss | 2257 |