| Value | Category | Cases | |
|---|---|---|---|
| 1964 | 5 |
0%
|
|
| 1965 | 1 |
0%
|
|
| 1966 | 2 |
0%
|
|
| 1967 | 12 |
0%
|
|
| 1968 | 20 |
0%
|
|
| 1969 | 23 |
0%
|
|
| 1970 | 58 |
0%
|
|
| 1971 | 85 |
0%
|
|
| 1972 | 125 |
0.1%
|
|
| 1973 | 112 |
0.1%
|
|
| 1974 | 227 |
0.1%
|
|
| 1975 | 306 |
0.2%
|
|
| 1976 | 478 |
0.2%
|
|
| 1977 | 688 |
0.4%
|
|
| 1978 | 770 |
0.4%
|
|
| 1979 | 1065 |
0.5%
|
|
| 1980 | 805 |
0.4%
|
|
| 1981 | 743 |
0.4%
|
|
| 1982 | 1698 |
0.9%
|
|
| 1983 | 1525 |
0.8%
|
|
| 1984 | 2183 |
1.1%
|
|
| 1985 | 2255 |
1.2%
|
|
| 1986 | 2226 |
1.1%
|
|
| 1987 | 2240 |
1.2%
|
|
| 1988 | 2263 |
1.2%
|
|
| 1989 | 6483 |
3.3%
|
|
| 1990 | 10493 |
5.4%
|
|
| 1991 | 5425 |
2.8%
|
|
| 1992 | 7565 |
3.9%
|
|
| 1993 | 8051 |
4.2%
|
|
| 1994 | 7255 |
3.7%
|
|
| 1995 | 9311 |
4.8%
|
|
| 1996 | 9687 |
5%
|
|
| 1997 | 15085 |
7.8%
|
|
| 1998 | 17749 |
9.1%
|
|
| 1999 | 17082 |
8.8%
|
|
| 2000 | 22078 |
11.4%
|
|
| 2001 | 24891 |
12.8%
|
|
| 2002 | 12915 |
6.7%
|