| Value | Category | Cases | |
|---|---|---|---|
| 1955 | 528 |
1.2%
|
|
| 1956 | 725 |
1.7%
|
|
| 1957 | 725 |
1.7%
|
|
| 1958 | 728 |
1.7%
|
|
| 1959 | 728 |
1.7%
|
|
| 1960 | 729 |
1.7%
|
|
| 1961 | 742 |
1.7%
|
|
| 1962 | 743 |
1.7%
|
|
| 1963 | 744 |
1.7%
|
|
| 1964 | 744 |
1.7%
|
|
| 1965 | 743 |
1.7%
|
|
| 1966 | 748 |
1.8%
|
|
| 1967 | 750 |
1.8%
|
|
| 1968 | 749 |
1.8%
|
|
| 1969 | 752 |
1.8%
|
|
| 1970 | 752 |
1.8%
|
|
| 1971 | 753 |
1.8%
|
|
| 1972 | 757 |
1.8%
|
|
| 1973 | 759 |
1.8%
|
|
| 1974 | 759 |
1.8%
|
|
| 1975 | 760 |
1.8%
|
|
| 1976 | 764 |
1.8%
|
|
| 1977 | 764 |
1.8%
|
|
| 1978 | 763 |
1.8%
|
|
| 1979 | 783 |
1.8%
|
|
| 1980 | 782 |
1.8%
|
|
| 1981 | 784 |
1.8%
|
|
| 1982 | 785 |
1.8%
|
|
| 1983 | 786 |
1.8%
|
|
| 1984 | 784 |
1.8%
|
|
| 1985 | 785 |
1.8%
|
|
| 1986 | 893 |
2.1%
|
|
| 1987 | 894 |
2.1%
|
|
| 1988 | 893 |
2.1%
|
|
| 1989 | 895 |
2.1%
|
|
| 1990 | 895 |
2.1%
|
|
| 1991 | 895 |
2.1%
|
|
| 1992 | 932 |
2.2%
|
|
| 1993 | 931 |
2.2%
|
|
| 1994 | 931 |
2.2%
|
|
| 1995 | 932 |
2.2%
|
|
| 1996 | 932 |
2.2%
|
|
| 1997 | 932 |
2.2%
|
|
| 1998 | 932 |
2.2%
|
|
| 1999 | 932 |
2.2%
|
|
| 2000 | 938 |
2.2%
|
|
| 2001 | 938 |
2.2%
|
|
| 2002 | 939 |
2.2%
|
|
| 2003 | 939 |
2.2%
|
|
| 2004 | 929 |
2.2%
|
|
| 2005 | 946 |
2.2%
|
|
| 2006 | 538 |
1.3%
|
|
| 2007 | 549 |
1.3%
|