| Value | Category | Cases | |
|---|---|---|---|
| 1977 | 1 |
0%
|
|
| 1979 | 2 |
0%
|
|
| 1980 | 5 |
0.1%
|
|
| 1981 | 5 |
0.1%
|
|
| 1982 | 8 |
0.2%
|
|
| 1983 | 18 |
0.4%
|
|
| 1984 | 26 |
0.6%
|
|
| 1985 | 32 |
0.7%
|
|
| 1986 | 40 |
0.9%
|
|
| 1987 | 46 |
1%
|
|
| 1988 | 61 |
1.3%
|
|
| 1989 | 94 |
2%
|
|
| 1990 | 85 |
1.8%
|
|
| 1991 | 87 |
1.9%
|
|
| 1992 | 134 |
2.9%
|
|
| 1993 | 152 |
3.2%
|
|
| 1994 | 150 |
3.2%
|
|
| 1995 | 159 |
3.4%
|
|
| 1996 | 135 |
2.9%
|
|
| 1997 | 200 |
4.3%
|
|
| 1998 | 211 |
4.5%
|
|
| 1999 | 193 |
4.1%
|
|
| 2000 | 269 |
5.7%
|
|
| 2001 | 199 |
4.2%
|
|
| 2002 | 238 |
5.1%
|
|
| 2003 | 268 |
5.7%
|
|
| 2004 | 257 |
5.5%
|
|
| 2005 | 330 |
7%
|
|
| 2006 | 270 |
5.8%
|
|
| 2007 | 328 |
7%
|
|
| 2008 | 320 |
6.8%
|
|
| 2009 | 323 |
6.9%
|
|
| 2010 | 45 |
1%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 34027 |