God. Jan. Feb. Mar. Apr. Maj. Jun. Jul. Avg. Sep. Okt. Nov. Dec. God. 1961 6.2 5.9 5.1 5.5 6.1 4.7 3.2 1.8 1.6 4.6 6.4 7.5 4.9 1962 7.1 7.4 7.6 5.1 4.8 5.2 3.1 1.7 3.4 4.9 7.1 8.0 5.4 1963 8.1 7.3 6.0 6.0 5.1 4.2 3.5 2.1 2.7 5.9 5.2 7.8 5.3 1964 5.5 6.6 7.9 5.2 6.4 3.9 3.8 3.3 4.9 5.4 7.6 6.7 5.6 1965 6.6 7.2 5.1 6.8 5.9 5.1 2.7 4.2 2.9 2.0 6.3 7.8 5.2 1966 8.0 6.4 7.2 7.0 4.4 5.7 3.5 3.9 2.7 5.0 6.7 7.9 5.7 1967 6.0 5.6 7.0 6.9 4.9 4.8 3.5 2.3 3.6 3.4 4.9 7.5 5.0 1968 7.5 6.5 5.4 5.0 6.1 4.6 3.3 5.2 5.3 4.2 6.9 8.6 5.7 1969 6.6 7.5 8.3 5.1 4.6 6.1 4.8 3.2 4.3 3.0 5.3 8.9 5.6 1970 7.9 7.7 6.4 6.5 6.8 4.7 4.0 3.2 2.7 5.1 5.0 7.4 5.6 1971 6.9 7.7 6.7 5.3 4.6 4.5 4.1 2.4 5.3 4.1 5.6 6.9 5.3 1972 8.2 6.7 4.5 6.4 4.4 4.2 5.6 4.8 6.4 7.0 4.9 5.8 5.7 1973 8.2 7.9 7.8 6.6 5.7 5.0 4.5 3.8 3.5 4.1 5.2 7.1 5.8 1974 7.2 6.0 5.8 6.1 6.2 6.0 3.4 3.2 3.4 6.0 5.9 6.4 5.5 1975 5.4 5.6 5.9 5.6 5.8 6.4 4.2 5.3 2.9 5.5 7.7 6.7 5.6 1976 7.0 6.4 5.5 6.0 5.1 5.5 4.3 4.8 4.7 6.7 7.3 7.1 5.9 1977 5.9 7.1 4.8 5.7 4.6 4.4 4.0 2.6 4.5 3.5 6.8 7.6 5.1 1978 6.0 7.7 6.5 7.1 6.5 5.4 2.3 3.8 5.6 4.7 7.1 7.7 5.8 1979 7.7 6.2 4.6 6.8 5.8 4.7 4.2 5.4 4.3 5.8 7.9 6.1 5.8 1980 7.4 6.1 7.3 6.1 7.5 4.5 4.3 3.9 3.8 5.0 6.0 6.9 5.8 1981 7.7 6.7 5.6 4.2 5.5 4.3 4.4 3.6 4.7 4.6 6.1 7.1 5.4 1982 6.3 5.8 5.5 6.6 4.9 4.2 4.7 3.6 2.8 5.6 4.4 7.0 5.1 1983 6.9 5.8 4.9 4.8 4.6 5.8 4.1 3.5 3.5 3.8 5.6 7.4 5.1 1984 6.9 9.1 7.7 7.0 4.7 3.6 2.8 5.0 2.9 4.2 4.8 7.4 5.5 1985 7.5 6.4 7.6 6.0 5.3 5.0 2.8 2.5 2.0 4.1 7.3 5.7 5.2 1986 7.5 8.4 7.4 4.6 4.3 5.6 4.8 2.1 3.2 4.3 4.3 6.1 5.2 1987 8.4 7.7 6.7 6.2 7.1 4.1 2.2 3.2 2.4 5.5 7.2 7.2 5.7 1988 6.7 6.6 7.2 6.2 6.1 6.2 1.7 1.9 4.0 4.2 6.9 7.5 5.4 1989 5.3 5.8 5.9 5.9 6.7 6.4 3.9 3.4 5.5 3.8 5.7 5.1 5.3 1990 5.7 4.4 4.5 7.2 5.6 4.5 2.8 2.4 5.0 4.7 5.9 7.6 5.0 1991 5.5 7.3 6.6 7.2 7.2 4.0 4.6 4.5 3.5 6.5 7.1 7.1 5.9 1992 6.4 5.5 5.3 5.6 5.0 6.5 3.6 1.5 1.8 6.8 6.3 4.8 4.9 1993 3.9 4.5 6.0 5.0 6.1 4.1 2.6 2.3 3.0 4.3 7.8 6.1 4.6 1994 6.4 7.0 4.6 6.3 4.5 4.4 4.4 2.7 2.7 6.0 5.7 6.8 5.1 1995 7.9 4.8 6.8 5.2 5.5 4.5 4.3 4.8 5.5 3.0 7.5 8.8 5.7 1996 8.2 7.2 7.5 6.4 5.7 3.3 3.2 4.8 7.6 7.1 5.2 8.5 6.2 1997 6.5 4.7 5.6 7.1 4.8 3.8 4.7 5.4 3.0 5.4 7.3 7.6 5.5 1998 5.2 5.7 5.0 6.1 7.1 4.1 2.7 3.0 5.9 5.5 8.7 5.8 5.4 1999 6.7 6.7 5.6 6.6 6.1 5.8 4.5 2.9 4.0 5.1 5.6 6.6 5.5 2000 6.1 6.3 5.5 5.5 3.5 3.0 2.3 1.7 4.4 4.8 4.8 4.8 4.4 2001 7.6 6.2 6.2 6.0 5.6 4.6 3.5 3.3 5.2 3.0 6.4 7.4 5.4 2002 6.8 4.5 6.0 6.6 5.6 4.5 4.7 6.0 5.6 5.4 5.8 8.5 5.8 2003 7.8 5.8 4.0 6.3 4.8 2.8 2.9 2.5 5.0 7.0 6.2 6.3 5.1