| Value | Category | Cases | |
|---|---|---|---|
| 1961 | 4 |
0%
|
|
| 1962 | 199 |
1.9%
|
|
| 1963 | 233 |
2.2%
|
|
| 1964 | 192 |
1.8%
|
|
| 1965 | 205 |
1.9%
|
|
| 1966 | 285 |
2.7%
|
|
| 1967 | 166 |
1.6%
|
|
| 1968 | 238 |
2.2%
|
|
| 1969 | 257 |
2.4%
|
|
| 1970 | 245 |
2.3%
|
|
| 1971 | 314 |
3%
|
|
| 1972 | 270 |
2.5%
|
|
| 1973 | 331 |
3.1%
|
|
| 1974 | 225 |
2.1%
|
|
| 1975 | 301 |
2.8%
|
|
| 1976 | 359 |
3.4%
|
|
| 1977 | 260 |
2.4%
|
|
| 1978 | 302 |
2.8%
|
|
| 1979 | 350 |
3.3%
|
|
| 1980 | 303 |
2.9%
|
|
| 1981 | 392 |
3.7%
|
|
| 1982 | 275 |
2.6%
|
|
| 1983 | 345 |
3.2%
|
|
| 1984 | 360 |
3.4%
|
|
| 1985 | 304 |
2.9%
|
|
| 1986 | 372 |
3.5%
|
|
| 1987 | 294 |
2.8%
|
|
| 1988 | 288 |
2.7%
|
|
| 1989 | 309 |
2.9%
|
|
| 1990 | 296 |
2.8%
|
|
| 1991 | 315 |
3%
|
|
| 1992 | 345 |
3.2%
|
|
| 1993 | 414 |
3.9%
|
|
| 1994 | 392 |
3.7%
|
|
| 1995 | 464 |
4.4%
|
|
| 1996 | 378 |
3.6%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 45 |
0.4%
|
| 9999 | Missing | 0 |
0%
|
| Sysmiss | 336 |