| Value | Category | Cases | |
|---|---|---|---|
| 1992 | 8 |
1%
|
|
| 1993 | 7 |
0.9%
|
|
| 1994 | 2 |
0.3%
|
|
| 1996 | 1 |
0.1%
|
|
| 1997 | 2 |
0.3%
|
|
| 1999 | 3 |
0.4%
|
|
| 2000 | 5 |
0.6%
|
|
| 2004 | 9 |
1.1%
|
|
| 2005 | 3 |
0.4%
|
|
| 2006 | 2 |
0.3%
|
|
| 2007 | 4 |
0.5%
|
|
| 2009 | 2 |
0.3%
|
|
| 2010 | 3 |
0.4%
|
|
| 2011 | 450 |
56.5%
|
|
| 2012 | 75 |
9.4%
|
|
| 2013 | 34 |
4.3%
|
|
| 2014 | 20 |
2.5%
|
|
| 2015 | 25 |
3.1%
|
|
| 2016 | 13 |
1.6%
|
|
| 2017 | 10 |
1.3%
|
|
| 2018 | 10 |
1.3%
|
|
| 2019 | 9 |
1.1%
|
|
| 2020 | 78 |
9.8%
|
|
| 2021 | 4 |
0.5%
|
|
| Missing value | 17 |
2.1%
|