| Value | Category | Cases | |
|---|---|---|---|
| 1959 | 2 |
0%
|
|
| 1960 | 31 |
0.2%
|
|
| 1961 | 79 |
0.5%
|
|
| 1962 | 115 |
0.7%
|
|
| 1963 | 89 |
0.5%
|
|
| 1964 | 96 |
0.6%
|
|
| 1965 | 167 |
1%
|
|
| 1966 | 76 |
0.5%
|
|
| 1967 | 85 |
0.5%
|
|
| 1968 | 126 |
0.8%
|
|
| 1969 | 127 |
0.8%
|
|
| 1970 | 205 |
1.2%
|
|
| 1971 | 78 |
0.5%
|
|
| 1972 | 151 |
0.9%
|
|
| 1973 | 149 |
0.9%
|
|
| 1974 | 138 |
0.8%
|
|
| 1975 | 254 |
1.5%
|
|
| 1976 | 105 |
0.6%
|
|
| 1977 | 123 |
0.7%
|
|
| 1978 | 144 |
0.9%
|
|
| 1979 | 125 |
0.8%
|
|
| 1980 | 235 |
1.4%
|
|
| 1981 | 106 |
0.6%
|
|
| 1982 | 158 |
1%
|
|
| 1983 | 138 |
0.8%
|
|
| 1984 | 159 |
1%
|
|
| 1985 | 172 |
1%
|
|
| 1986 | 141 |
0.9%
|
|
| 1987 | 150 |
0.9%
|
|
| 1988 | 201 |
1.2%
|
|
| 1989 | 149 |
0.9%
|
|
| 1990 | 228 |
1.4%
|
|
| 1991 | 202 |
1.2%
|
|
| 1992 | 312 |
1.9%
|
|
| 1993 | 207 |
1.3%
|
|
| 1994 | 218 |
1.3%
|
|
| 1995 | 138 |
0.8%
|
|
| 1996 | 4 |
0%
|
|
| 9998 | DK | 154 |
0.9%
|
| 9999 | Missing | 36 |
0.2%
|
| Sysmiss | 10875 |
66.1%
|