| Value | Category | Cases | |
|---|---|---|---|
| 1956 | 2 |
1%
|
|
| 1980 | 2 |
1%
|
|
| 1986 | 1 |
0.5%
|
|
| 1990 | 1 |
0.5%
|
|
| 1995 | 1 |
0.5%
|
|
| 1999 | 1 |
0.5%
|
|
| 2000 | 2 |
1%
|
|
| 2002 | 1 |
0.5%
|
|
| 2003 | 1 |
0.5%
|
|
| 2004 | 2 |
1%
|
|
| 2005 | 3 |
1.4%
|
|
| 2006 | 3 |
1.4%
|
|
| 2008 | 3 |
1.4%
|
|
| 2009 | 2 |
1%
|
|
| 2010 | 4 |
1.9%
|
|
| 2011 | 1 |
0.5%
|
|
| 2012 | 4 |
1.9%
|
|
| 2013 | 1 |
0.5%
|
|
| 2014 | 5 |
2.4%
|
|
| 2015 | 2 |
1%
|
|
| 2016 | 11 |
5.3%
|
|
| 2017 | 66 |
31.6%
|
|
| 2018 | 72 |
34.4%
|
|
| 9999 | 18 |
8.6%
|