| Value | Category | Cases | |
|---|---|---|---|
| 1974 | 2 |
0%
|
|
| 1975 | 2 |
0%
|
|
| 1977 | 9 |
0.2%
|
|
| 1978 | 8 |
0.2%
|
|
| 1979 | 22 |
0.5%
|
|
| 1980 | 34 |
0.8%
|
|
| 1981 | 38 |
0.9%
|
|
| 1982 | 63 |
1.4%
|
|
| 1983 | 72 |
1.6%
|
|
| 1984 | 85 |
1.9%
|
|
| 1985 | 103 |
2.3%
|
|
| 1986 | 111 |
2.5%
|
|
| 1987 | 129 |
2.9%
|
|
| 1988 | 112 |
2.5%
|
|
| 1989 | 168 |
3.8%
|
|
| 1990 | 168 |
3.8%
|
|
| 1991 | 159 |
3.6%
|
|
| 1992 | 170 |
3.8%
|
|
| 1993 | 186 |
4.2%
|
|
| 1994 | 167 |
3.8%
|
|
| 1995 | 161 |
3.6%
|
|
| 1996 | 162 |
3.7%
|
|
| 1997 | 213 |
4.8%
|
|
| 1998 | 163 |
3.7%
|
|
| 1999 | 206 |
4.7%
|
|
| 2000 | 205 |
4.6%
|
|
| 2001 | 213 |
4.8%
|
|
| 2002 | 206 |
4.7%
|
|
| 2003 | 220 |
5%
|
|
| 2004 | 221 |
5%
|
|
| 2005 | 224 |
5.1%
|
|
| 2006 | 205 |
4.6%
|
|
| 2007 | 211 |
4.8%
|
|
| 9997 | Inconsistent | 1 |
0%
|
| 9998 | DK | 0 |
0%
|
| 9999 | 1 | ||
| Sysmiss | 5950 |