| Value | Category | Cases | |
|---|---|---|---|
| 1966 | 1 |
0.1%
|
|
| 1969 | 1 |
0.1%
|
|
| 1990 | 1 |
0.1%
|
|
| 1996 | 58 |
5.1%
|
|
| 1997 | 11 |
1%
|
|
| 1998 | 4 |
0.3%
|
|
| 1999 | 13 |
1.1%
|
|
| 2000 | 4 |
0.3%
|
|
| 2001 | 1 |
0.1%
|
|
| 2002 | 2 |
0.2%
|
|
| 2004 | 6 |
0.5%
|
|
| 2006 | 1 |
0.1%
|
|
| 2008 | 1 |
0.1%
|
|
| 2009 | 13 |
1.1%
|
|
| 2010 | 2 |
0.2%
|
|
| 2012 | 2 |
0.2%
|
|
| 2014 | 3 |
0.3%
|
|
| 2015 | 305 |
26.6%
|
|
| 2016 | 106 |
9.2%
|
|
| 2017 | 34 |
3%
|
|
| 2018 | 5 |
0.4%
|
|
| Missing value | 574 |
50%
|