| Value | Category | Cases | |
|---|---|---|---|
| 1948 | 1 |
0.2%
|
|
| 1950 | 1 |
0.2%
|
|
| 1959 | 4 |
0.8%
|
|
| 1960 | 1 |
0.2%
|
|
| 1961 | 1 |
0.2%
|
|
| 1962 | 4 |
0.8%
|
|
| 1965 | 1 |
0.2%
|
|
| 1966 | 2 |
0.4%
|
|
| 1967 | 2 |
0.4%
|
|
| 1968 | 1 |
0.2%
|
|
| 1969 | 1 |
0.2%
|
|
| 1970 | 2 |
0.4%
|
|
| 1971 | 3 |
0.6%
|
|
| 1972 | 2 |
0.4%
|
|
| 1973 | 1 |
0.2%
|
|
| 1975 | 1 |
0.2%
|
|
| 1977 | 1 |
0.2%
|
|
| 1979 | 2 |
0.4%
|
|
| 1980 | 2 |
0.4%
|
|
| 1981 | 2 |
0.4%
|
|
| 1983 | 3 |
0.6%
|
|
| 1984 | 3 |
0.6%
|
|
| 1985 | 2 |
0.4%
|
|
| 1986 | 1 |
0.2%
|
|
| 1987 | 4 |
0.8%
|
|
| 1988 | 2 |
0.4%
|
|
| 1989 | 4 |
0.8%
|
|
| 1990 | 15 |
2.9%
|
|
| 1991 | 13 |
2.5%
|
|
| 1992 | 23 |
4.4%
|
|
| 1993 | 10 |
1.9%
|
|
| 1994 | 20 |
3.9%
|
|
| 1995 | 17 |
3.3%
|
|
| 1996 | 27 |
5.2%
|
|
| 1997 | 33 |
6.4%
|
|
| 1998 | 64 |
12.3%
|
|
| 1999 | 48 |
9.2%
|
|
| 2000 | 47 |
9.1%
|
|
| 2001 | 101 |
19.5%
|
|
| 2002 | 47 |
9.1%
|
|
| 7777 | NZ | 0 |
0%
|
| 8888 | BO | 0 |
0%
|
| Sysmiss | 1 |