| Value | Category | Cases | |
|---|---|---|---|
| 1974 | 4 |
0.1%
|
|
| 1979 | 7 |
0.1%
|
|
| 1980 | 17 |
0.4%
|
|
| 1981 | 23 |
0.5%
|
|
| 1982 | 31 |
0.7%
|
|
| 1983 | 21 |
0.4%
|
|
| 1984 | 43 |
0.9%
|
|
| 1985 | 35 |
0.7%
|
|
| 1986 | 73 |
1.6%
|
|
| 1987 | 43 |
0.9%
|
|
| 1988 | 79 |
1.7%
|
|
| 1989 | 131 |
2.8%
|
|
| 1990 | 111 |
2.4%
|
|
| 1991 | 149 |
3.2%
|
|
| 1992 | 115 |
2.4%
|
|
| 1993 | 158 |
3.4%
|
|
| 1994 | 153 |
3.3%
|
|
| 1995 | 178 |
3.8%
|
|
| 1996 | 199 |
4.2%
|
|
| 1997 | 166 |
3.5%
|
|
| 1998 | 266 |
5.7%
|
|
| 1999 | 285 |
6.1%
|
|
| 2000 | 284 |
6%
|
|
| 2001 | 194 |
4.1%
|
|
| 2002 | 180 |
3.8%
|
|
| 2003 | 349 |
7.4%
|
|
| 2004 | 370 |
7.9%
|
|
| 2005 | 283 |
6%
|
|
| 2006 | 336 |
7.1%
|
|
| 2007 | 419 |
8.9%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | Don't know | 0 |
0%
|
| 9999 | 1 | ||
| Sysmiss | 44504 |