| Value | Category | Cases | |
|---|---|---|---|
| 1969 | 30 |
0.1%
|
|
| 1970 | 573 |
1.6%
|
|
| 1971 | 453 |
1.2%
|
|
| 1972 | 409 |
1.1%
|
|
| 1973 | 397 |
1.1%
|
|
| 1974 | 721 |
2%
|
|
| 1975 | 524 |
1.4%
|
|
| 1976 | 454 |
1.2%
|
|
| 1977 | 448 |
1.2%
|
|
| 1978 | 589 |
1.6%
|
|
| 1979 | 987 |
2.7%
|
|
| 1980 | 1019 |
2.8%
|
|
| 1981 | 753 |
2.1%
|
|
| 1982 | 751 |
2%
|
|
| 1983 | 652 |
1.8%
|
|
| 1984 | 1233 |
3.4%
|
|
| 1985 | 948 |
2.6%
|
|
| 1986 | 774 |
2.1%
|
|
| 1987 | 852 |
2.3%
|
|
| 1988 | 1111 |
3%
|
|
| 1989 | 1770 |
4.8%
|
|
| 1990 | 1544 |
4.2%
|
|
| 1991 | 1483 |
4%
|
|
| 1992 | 1265 |
3.4%
|
|
| 1993 | 1239 |
3.4%
|
|
| 1994 | 1823 |
5%
|
|
| 1995 | 1190 |
3.2%
|
|
| 1996 | 1080 |
2.9%
|
|
| 1997 | 1194 |
3.3%
|
|
| 1998 | 1171 |
3.2%
|
|
| 1999 | 1857 |
5.1%
|
|
| 2000 | 1564 |
4.3%
|
|
| 2001 | 1555 |
4.2%
|
|
| 2002 | 1224 |
3.3%
|
|
| 2003 | 1420 |
3.9%
|
|
| 2004 | 1454 |
4%
|
|
| 2005 | 60 |
0.2%
|
|
| 9997 | Inconsistent | 2 |
0%
|
| 9998 | DK | 152 |
0.4%
|
| 9999 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 428 |