| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1962 | 1 |
0.2%
|
| 2 | 1966 | 2 |
0.3%
|
| 3 | 1967 | 4 |
0.6%
|
| 4 | 1968 | 2 |
0.3%
|
| 5 | 1975 | 2 |
0.3%
|
| 6 | 1980 | 1 |
0.2%
|
| 7 | 1984 | 2 |
0.3%
|
| 8 | 1985 | 1 |
0.2%
|
| 9 | 1986 | 2 |
0.3%
|
| 10 | 1988 | 2 |
0.3%
|
| 11 | 1990 | 2 |
0.3%
|
| 12 | 1993 | 26 |
4.1%
|
| 13 | 1994 | 1 |
0.2%
|
| 14 | 1995 | 8 |
1.3%
|
| 15 | 1996 | 4 |
0.6%
|
| 16 | 1997 | 24 |
3.8%
|
| 17 | 1998 | 18 |
2.8%
|
| 18 | 1999 | 4 |
0.6%
|
| 19 | 2000 | 13 |
2.1%
|
| 20 | 2001 | 12 |
1.9%
|
| 21 | 2002 | 3 |
0.5%
|
| 22 | 2003 | 5 |
0.8%
|
| 23 | 2004 | 3 |
0.5%
|
| 24 | 2005 | 2 |
0.3%
|
| 25 | 2006 | 2 |
0.3%
|
| 26 | 2008 | 2 |
0.3%
|
| 27 | 2009 | 2 |
0.3%
|
| 28 | 2010 | 5 |
0.8%
|
| 29 | 2011 | 4 |
0.6%
|
| 30 | 2012 | 20 |
3.2%
|
| 31 | 2013 | 28 |
4.4%
|
| 32 | 2014 | 12 |
1.9%
|
| 33 | 2015 | 25 |
3.9%
|
| 34 | 2016 | 41 |
6.5%
|
| 35 | 2017 | 145 |
22.9%
|
| 36 | 2018 | 32 |
5.1%
|
| 37 | 2019 | 24 |
3.8%
|
| 38 | 2020 | 4 |
0.6%
|
| Missing value | 143 |
22.6%
|