| Value | Category | Cases | |
|---|---|---|---|
| 1972 | 1 |
0%
|
|
| 1973 | 2 |
0%
|
|
| 1974 | 3 |
0.1%
|
|
| 1975 | 9 |
0.2%
|
|
| 1976 | 18 |
0.3%
|
|
| 1977 | 36 |
0.7%
|
|
| 1978 | 25 |
0.5%
|
|
| 1979 | 48 |
0.9%
|
|
| 1980 | 68 |
1.3%
|
|
| 1981 | 85 |
1.6%
|
|
| 1982 | 126 |
2.4%
|
|
| 1983 | 132 |
2.5%
|
|
| 1984 | 119 |
2.2%
|
|
| 1985 | 171 |
3.2%
|
|
| 1986 | 138 |
2.6%
|
|
| 1987 | 191 |
3.6%
|
|
| 1988 | 145 |
2.7%
|
|
| 1989 | 183 |
3.4%
|
|
| 1990 | 188 |
3.5%
|
|
| 1991 | 163 |
3.1%
|
|
| 1992 | 226 |
4.2%
|
|
| 1993 | 194 |
3.6%
|
|
| 1994 | 202 |
3.8%
|
|
| 1995 | 195 |
3.7%
|
|
| 1996 | 162 |
3%
|
|
| 1997 | 233 |
4.4%
|
|
| 1998 | 200 |
3.7%
|
|
| 1999 | 229 |
4.3%
|
|
| 2000 | 265 |
5%
|
|
| 2001 | 222 |
4.2%
|
|
| 2002 | 207 |
3.9%
|
|
| 2003 | 225 |
4.2%
|
|
| 2004 | 213 |
4%
|
|
| 2005 | 251 |
4.7%
|
|
| 2006 | 224 |
4.2%
|
|
| 2007 | 239 |
4.5%
|
|
| 9997 | Inconsistent | 3 |
0.1%
|
| 9998 | DK | 0 |
0%
|
| Sysmiss | 5029 |