| Value | Category | Cases | |
|---|---|---|---|
| 1997 | 2 |
0%
|
|
| 2001 | 1 |
0%
|
|
| 2010 | 1 |
0%
|
|
| 2013 | 1 |
0%
|
|
| 2014 | 1 |
0%
|
|
| 2015 | 10 |
0.2%
|
|
| 2016 | 22 |
0.5%
|
|
| 2017 | 176 |
3.7%
|
|
| 2018 | 4467 |
95.1%
|
|
| 9998 | NSP | 18 |
0.4%
|
| Sysmiss | 682 |