| Value | Category | Cases | |
|---|---|---|---|
| 1947 | 2 |
4.2%
|
|
| 1954 | 1 |
2.1%
|
|
| 1955 | 1 |
2.1%
|
|
| 1960 | 1 |
2.1%
|
|
| 1963 | 1 |
2.1%
|
|
| 1964 | 2 |
4.2%
|
|
| 1965 | 3 |
6.3%
|
|
| 1968 | 1 |
2.1%
|
|
| 1969 | 2 |
4.2%
|
|
| 1970 | 1 |
2.1%
|
|
| 1971 | 1 |
2.1%
|
|
| 1972 | 2 |
4.2%
|
|
| 1973 | 3 |
6.3%
|
|
| 1974 | 2 |
4.2%
|
|
| 1975 | 1 |
2.1%
|
|
| 1977 | 2 |
4.2%
|
|
| 1979 | 1 |
2.1%
|
|
| 1980 | 1 |
2.1%
|
|
| 1984 | 3 |
6.3%
|
|
| 1985 | 1 |
2.1%
|
|
| 1987 | 2 |
4.2%
|
|
| 1989 | 3 |
6.3%
|
|
| 1990 | 2 |
4.2%
|
|
| 1993 | 1 |
2.1%
|
|
| 1997 | 1 |
2.1%
|
|
| 1998 | 1 |
2.1%
|
|
| 2001 | 2 |
4.2%
|
|
| 2003 | 1 |
2.1%
|
|
| 2004 | 1 |
2.1%
|
|
| 2008 | 1 |
2.1%
|
|
| 2012 | 1 |
2.1%
|
|
| Sysmiss | 2 |