| Value | Category | Cases | |
|---|---|---|---|
| -9 | DK | 0 |
0%
|
| 1948 | 1 |
1%
|
|
| 1951 | 4 |
3.8%
|
|
| 1955 | 2 |
1.9%
|
|
| 1960 | 1 |
1%
|
|
| 1968 | 1 |
1%
|
|
| 1970 | 1 |
1%
|
|
| 1972 | 1 |
1%
|
|
| 1973 | 1 |
1%
|
|
| 1974 | 1 |
1%
|
|
| 1978 | 4 |
3.8%
|
|
| 1982 | 2 |
1.9%
|
|
| 1984 | 6 |
5.7%
|
|
| 1985 | 1 |
1%
|
|
| 1987 | 2 |
1.9%
|
|
| 1989 | 1 |
1%
|
|
| 1990 | 4 |
3.8%
|
|
| 1992 | 3 |
2.9%
|
|
| 1994 | 4 |
3.8%
|
|
| 1995 | 3 |
2.9%
|
|
| 1997 | 2 |
1.9%
|
|
| 1998 | 2 |
1.9%
|
|
| 1999 | 3 |
2.9%
|
|
| 2000 | 8 |
7.6%
|
|
| 2001 | 2 |
1.9%
|
|
| 2002 | 3 |
2.9%
|
|
| 2003 | 5 |
4.8%
|
|
| 2004 | 7 |
6.7%
|
|
| 2005 | 4 |
3.8%
|
|
| 2006 | 8 |
7.6%
|
|
| 2007 | 9 |
8.6%
|
|
| 2008 | 5 |
4.8%
|
|
| 2009 | 4 |
3.8%
|
|
| Sysmiss | 5597 |