| Value | Category | Cases | |
|---|---|---|---|
| 1960 | 1 |
1.9%
|
|
| 1981 | 1 |
1.9%
|
|
| 1986 | 1 |
1.9%
|
|
| 1987 | 2 |
3.8%
|
|
| 1988 | 2 |
3.8%
|
|
| 1992 | 2 |
3.8%
|
|
| 1994 | 1 |
1.9%
|
|
| 1995 | 2 |
3.8%
|
|
| 1999 | 2 |
3.8%
|
|
| 2000 | 3 |
5.7%
|
|
| 2001 | 1 |
1.9%
|
|
| 2002 | 5 |
9.4%
|
|
| 2004 | 2 |
3.8%
|
|
| 2005 | 2 |
3.8%
|
|
| 2006 | 2 |
3.8%
|
|
| 2007 | 1 |
1.9%
|
|
| 2009 | 2 |
3.8%
|
|
| 2010 | 1 |
1.9%
|
|
| 2012 | 2 |
3.8%
|
|
| 2013 | 3 |
5.7%
|
|
| 2014 | 1 |
1.9%
|
|
| 2015 | 3 |
5.7%
|
|
| 2016 | 1 |
1.9%
|
|
| 2018 | 1 |
1.9%
|
|
| 2019 | 3 |
5.7%
|
|
| 2020 | 1 |
1.9%
|
|
| 2021 | 3 |
5.7%
|
|
| 2023 | 1 |
1.9%
|
|
| 2024 | 1 |
1.9%
|
|
| 9998 | Don't know | 0 |
0%
|
| Sysmiss | 41959 |