| Value | Category | Cases | |
|---|---|---|---|
| -99 | -99. DON'T KNOW | 144 |
29.3%
|
| 1960 | 1 |
0.2%
|
|
| 1965 | 2 |
0.4%
|
|
| 1966 | 1 |
0.2%
|
|
| 1970 | 1 |
0.2%
|
|
| 1973 | 1 |
0.2%
|
|
| 1975 | 5 |
1%
|
|
| 1980 | 4 |
0.8%
|
|
| 1982 | 3 |
0.6%
|
|
| 1985 | 2 |
0.4%
|
|
| 1988 | 3 |
0.6%
|
|
| 1990 | 6 |
1.2%
|
|
| 1993 | 2 |
0.4%
|
|
| 1995 | 14 |
2.8%
|
|
| 1996 | 2 |
0.4%
|
|
| 1998 | 7 |
1.4%
|
|
| 1999 | 8 |
1.6%
|
|
| 2000 | 17 |
3.5%
|
|
| 2001 | 5 |
1%
|
|
| 2002 | 6 |
1.2%
|
|
| 2003 | 9 |
1.8%
|
|
| 2004 | 3 |
0.6%
|
|
| 2005 | 9 |
1.8%
|
|
| 2006 | 2 |
0.4%
|
|
| 2007 | 4 |
0.8%
|
|
| 2008 | 4 |
0.8%
|
|
| 2009 | 5 |
1%
|
|
| 2010 | 11 |
2.2%
|
|
| 2011 | 8 |
1.6%
|
|
| 2012 | 3 |
0.6%
|
|
| 2013 | 6 |
1.2%
|
|
| 2014 | 2 |
0.4%
|
|
| 2015 | 12 |
2.4%
|
|
| 2017 | 11 |
2.2%
|
|
| 2018 | 32 |
6.5%
|
|
| 2019 | 15 |
3%
|
|
| 2020 | 25 |
5.1%
|
|
| 2021 | 18 |
3.7%
|
|
| 2022 | 32 |
6.5%
|
|
| 2023 | 47 |
9.6%
|
|
| Sysmiss | 10114 |