| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1998 | 2 |
0.7%
|
| 2 | 2003 | 1 |
0.4%
|
| 3 | 2005 | 2 |
0.7%
|
| 4 | 2010 | 4 |
1.4%
|
| 5 | 2012 | 5 |
1.8%
|
| 6 | 2013 | 3 |
1.1%
|
| 7 | 2014 | 7 |
2.5%
|
| 8 | 2015 | 11 |
3.9%
|
| 9 | 2016 | 21 |
7.4%
|
| 10 | 2017 | 34 |
12%
|
| 11 | 2018 | 51 |
18%
|
| 12 | 2019 | 79 |
27.9%
|
| 13 | 2020 | 26 |
9.2%
|
| Missing value | 37 |
13.1%
|