| Value | Category | Cases | |
|---|---|---|---|
| 1967 | 110 |
0.3%
|
|
| 1968 | 460 |
1.2%
|
|
| 1969 | 396 |
1.1%
|
|
| 1970 | 957 |
2.5%
|
|
| 1971 | 510 |
1.4%
|
|
| 1972 | 656 |
1.7%
|
|
| 1973 | 453 |
1.2%
|
|
| 1974 | 462 |
1.2%
|
|
| 1975 | 911 |
2.4%
|
|
| 1976 | 665 |
1.8%
|
|
| 1977 | 673 |
1.8%
|
|
| 1978 | 769 |
2%
|
|
| 1979 | 567 |
1.5%
|
|
| 1980 | 1183 |
3.1%
|
|
| 1981 | 770 |
2%
|
|
| 1982 | 1055 |
2.8%
|
|
| 1983 | 687 |
1.8%
|
|
| 1984 | 885 |
2.3%
|
|
| 1985 | 1139 |
3%
|
|
| 1986 | 1226 |
3.3%
|
|
| 1987 | 1096 |
2.9%
|
|
| 1988 | 1390 |
3.7%
|
|
| 1989 | 1210 |
3.2%
|
|
| 1990 | 1587 |
4.2%
|
|
| 1991 | 1510 |
4%
|
|
| 1992 | 1583 |
4.2%
|
|
| 1993 | 1206 |
3.2%
|
|
| 1994 | 1369 |
3.6%
|
|
| 1995 | 1192 |
3.2%
|
|
| 1996 | 1588 |
4.2%
|
|
| 1997 | 1362 |
3.6%
|
|
| 1998 | 1836 |
4.9%
|
|
| 1999 | 1553 |
4.1%
|
|
| 2000 | 1673 |
4.4%
|
|
| 2001 | 1559 |
4.1%
|
|
| 2002 | 430 |
1.1%
|
|
| 9997 | Inconsistent | 3 |
0%
|
| 9998 | DK | 22 |
0.1%
|
| Sysmiss | 966 |
2.6%
|