Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1961 | - | 23.4(100) | 20.5(100) | 20.2(100) | 18.6(100) | 26.6(100) | 18.5(100) | 24.4(100) | 22.5(100) | 26.3(100) | 28.1(100) | 18.3(100) |
1962 | 18.1(100) | 20.9(100) | - | - | - | - | - | - | - | - | - | - |
1963 | 15.7(100) | 24.0(100) | 18.2(100) | 16.8(100) | 22.2(100) | 27.5(100) | 22.7(100) | 26.9(100) | 23.8(100) | 17.8(100) | 19.7(100) | 23.7(100) |
1964 | 19.8(100) | 20.9(100) | 17.4(100) | 21.0(100) | 22.3(100) | 24.9(100) | 23.5(100) | 21.6(100) | 19.7(100) | 23.7(100) | 19.0(100) | 12.6(100) |
1965 | 16.3(100) | 20.0(100) | 19.8(100) | 23.4(100) | 25.9(100) | 28.9(100) | 18.3(100) | 21.9(100) | 13.4(100) | 22.7(100) | 18.7(100) | 15.3(100) |
1966 | 17.8(100) | 19.5(100) | 17.5(100) | 21.4(100) | 26.2(100) | 16.5(100) | 25.6(100) | 23.8(100) | 24.1(100) | 22.5(100) | 27.2(100) | 17.1(100) |
1967 | 17.1(100) | 23.6(100) | 24.8(100) | 24.2(100) | 25.6(100) | 29.4(100) | 22.1(100) | 24.0(100) | 20.0(100) | 22.4(100) | 29.2(100) | 21.1(100) |
1968 | 14.5(100) | 16.0(100) | 19.9(100) | 18.8(100) | 13.6(100) | 18.7(100) | 16.3(100) | 21.5(100) | 22.7(100) | 23.1(100) | 20.8(100) | 11.4(100) |
1969 | 18.5(100) | 18.0(100) | 22.5(100) | 21.7(100) | 23.7(100) | 31.1(100) | 20.7(100) | 18.0(100) | 15.8(100) | 18.7(100) | 19.3(100) | 12.2(100) |
1970 | 14.9(100) | 16.5(100) | 18.4(100) | 17.2(100) | 19.6(100) | 23.1(100) | 21.4(100) | 22.8(100) | 10.0(100) | 22.2(100) | 19.3(100) | 17.4(100) |
1971 | 16.2(100) | 22.7(100) | 25.8(100) | 18.9(100) | 19.2(100) | 18.8(100) | 21.9(100) | 16.0(100) | 25.6(100) | 23.4(100) | 24.6(100) | 14.7(100) |
1972 | 9.3(100) | 19.2(100) | 20.5(100) | 24.3(100) | 20.6(100) | 28.3(100) | 12.6(100) | 28.5(100) | 25.3(100) | 21.9(100) | 20.0(100) | 18.0(100) |
1973 | 18.5(100) | 20.7(100) | 19.7(100) | 26.1(100) | 31.2(100) | 22.2(100) | 25.5(100) | 16.8(100) | 19.0(100) | 18.2(100) | 15.2(100) | 19.2(100) |
1974 | 7.7(100) | 21.4(100) | 25.0(100) | 18.5(100) | 39.1(100) | 19.2(100) | 22.7(100) | 16.2(100) | 19.6(100) | 22.8(100) | 15.7(100) | 14.3(100) |
1975 | 11.8(100) | 17.2(100) | 22.1(100) | 22.3(100) | 24.7(100) | 24.4(100) | 17.3(100) | 20.9(100) | 23.0(100) | 21.6(100) | 24.2(100) | 18.2(100) |
1976 | 13.2(100) | 21.7(100) | 24.5(100) | 17.3(100) | 18.5(100) | 17.2(100) | 15.7(100) | 19.8(100) | 18.2(100) | 13.9(100) | 23.0(100) | 14.7(100) |
1977 | 13.8(100) | 22.2(100) | 23.5(100) | 14.1(100) | 16.8(100) | 17.4(100) | 26.5(100) | 23.4(100) | 21.5(100) | 16.0(100) | 19.9(100) | 14.5(100) |
1978 | 14.6(100) | 19.1(100) | 17.1(100) | 17.7(100) | 19.3(100) | 14.2(100) | 24.8(100) | 13.7(100) | 18.9(100) | 16.6(100) | 15.6(100) | 19.2(100) |
1979 | 13.3(100) | 19.3(100) | 21.5(100) | 25.5(100) | 19.0(100) | 15.4(100) | 19.8(100) | 20.9(100) | 14.7(100) | 20.5(100) | 22.1(100) | 14.1(100) |
1980 | 17.0(100) | 14.9(100) | 26.4(100) | 18.5(100) | 28.1(100) | 18.0(100) | 25.4(100) | 24.0(100) | 20.9(100) | 24.2(100) | 18.2(100) | 13.2(100) |
1981 | 14.2(100) | 23.2(100) | 20.9(100) | 23.2(100) | 25.5(100) | 23.1(100) | 29.8(100) | 23.0(100) | 19.9(100) | 20.9(100) | 21.9(100) | 23.8(100) |
1982 | 20.3(100) | 22.9(100) | 24.3(100) | 26.5(100) | 28.2(100) | 18.8(100) | 23.1(100) | 19.1(100) | 17.6(100) | 22.5(100) | 30.5(100) | 21.9(100) |
1983 | 17.5(100) | 25.9(100) | 25.1(100) | 29.6(100) | 18.5(100) | 21.3(100) | 15.8(100) | 22.0(100) | 20.7(100) | 23.7(100) | 19.9(100) | 19.9(100) |
1984 | 18.0(100) | 20.9(100) | 22.7(100) | 21.7(100) | 20.5(100) | 19.4(100) | 18.7(100) | 13.5(100) | 24.4(100) | 23.5(100) | 22.5(100) | 11.1(100) |
1985 | 16.9(100) | 19.7(100) | 20.1(100) | 24.8(100) | 19.8(100) | 24.3(100) | 25.6(100) | 17.1(100) | 23.7(100) | 25.5(100) | 15.8(100) | 21.8(100) |
1986 | 17.4(100) | 20.4(100) | 19.0(100) | 20.8(100) | 23.9(100) | 16.2(100) | 18.8(100) | 20.3(100) | 23.1(100) | 24.9(100) | 20.8(100) | 23.3(100) |
1987 | 16.5(100) | 22.6(100) | 27.5(100) | 21.8(100) | 20.6(100) | 22.7(100) | 16.6(100) | 16.2(100) | 18.1(100) | 21.6(100) | 22.4(100) | 15.9(100) |
1988 | 18.0(100) | 25.9(100) | 25.7(100) | 24.0(100) | 25.3(100) | 30.5(100) | 21.3(100) | 25.5(100) | 23.8(100) | 19.7(100) | 15.4(100) | 14.8(100) |
1989 | 20.2(100) | 29.1(100) | 24.1(100) | 23.2(100) | 11.7(100) | 17.0(100) | 21.0(100) | 23.8(100) | 15.4(100) | 21.7(100) | 23.8(100) | 15.0(100) |
1990 | 13.7(100) | 21.8(100) | 24.8(100) | 20.0(100) | 21.5(100) | 18.9(100) | 28.5(100) | 14.7(100) | 14.2(100) | 23.4(100) | 21.1(100) | 13.9(100) |
1991 | 16.0(100) | 26.5(100) | 21.9(100) | 19.6(100) | 26.1(100) | 23.3(100) | 25.8(100) | 18.3(100) | 20.5(100) | 14.9(100) | 20.9(100) | 19.3(100) |
1992 | 16.7(100) | 21.3(100) | 26.3(100) | 22.5(100) | 27.4(100) | 23.2(100) | 21.1(100) | 20.1(100) | 17.6(100) | 21.9(100) | 20.7(100) | 21.0(100) |
1993 | 17.7(100) | 24.5(100) | 26.8(100) | 19.9(100) | 20.3(100) | 20.3(100) | 15.7(100) | 20.1(100) | 25.1(100) | 24.5(100) | 20.0(100) | 20.5(100) |
1994 | 16.4(100) | 17.9(100) | 19.4(100) | 23.9(100) | 20.5(100) | 25.5(100) | 25.5(100) | 15.9(100) | 16.2(100) | 20.2(100) | 20.5(100) | 16.7(100) |
1995 | 14.3(100) | 22.2(100) | 16.9(100) | 24.9(100) | 22.6(100) | 16.2(100) | 20.1(100) | 17.6(100) | 17.6(100) | 24.5(100) | 24.6(100) | 19.2(100) |
1996 | 13.7(100) | 20.5(100) | 21.0(100) | 22.4(100) | 21.0( 97) | 26.0(100) | 32.5(100) | 24.1(100) | 25.6(100) | 24.7(100) | 21.9(100) | 21.6(100) |
1997 | 16.1(100) | 20.1(100) | 19.6(100) | 29.7(100) | 25.2(100) | 21.7(100) | 16.0(100) | 22.3(100) | 21.4(100) | 19.0(100) | 25.2(100) | 15.6(100) |
1998 | 21.6(100) | 22.0(100) | 26.2(100) | 15.5(100) | 21.3(100) | 25.5(100) | 20.0(100) | 17.4(100) | 22.7(100) | 20.0(100) | 22.0(100) | 18.0(100) |
1999 | 23.5(100) | 20.0(100) | 21.4(100) | 21.6(100) | 25.6(100) | 28.9(100) | 17.9(100) | 22.8(100) | 21.3(100) | 19.0(100) | 20.5(100) | 15.3(100) |
2000 | 15.9(100) | 19.9(100) | 21.3(100) | 24.6(100) | 18.5(100) | 21.4(100) | 17.2(100) | 20.1(100) | 18.9(100) | 22.6(100) | 24.2(100) | 12.8(100) |
2001 | 16.0(100) | 20.1(100) | 23.9(100) | 24.1(100) | 26.7(100) | 22.8(100) | 22.3(100) | 20.4(100) | 18.8(100) | 20.1(100) | 24.6(100) | 21.4(100) |
2002 | 17.7(100) | 23.1(100) | 21.9(100) | 25.7(100) | 29.1(100) | 25.7(100) | 28.3(100) | 19.0(100) | 22.8(100) | 23.9(100) | 15.1(100) | 15.4(100) |
2003 | 15.3(100) | 15.1(100) | 21.7(100) | 25.4(100) | 27.4(100) | 23.7(100) | 18.5(100) | 24.2(100) | 19.6(100) | 17.8(100) | 23.2(100) | 17.8(100) |
2004 | 16.5(100) | 26.0(100) | 22.5(100) | 20.5(100) | 20.4(100) | 21.9(100) | 15.0(100) | 23.9(100) | 15.5(100) | 20.9(100) | 20.3(100) | 17.4(100) |
2005 | 17.3(100) | 23.8(100) | 21.5(100) | 18.2(100) | 23.2(100) | 25.5(100) | 21.7(100) | 23.7(100) | 22.9(100) | 15.4(100) | 16.7(100) | 11.5(100) |
2006 | 14.5(100) | 23.8(100) | 17.8(100) | 22.3(100) | 23.5(100) | 21.8(100) | 11.2(100) | 33.8(100) | 15.9(100) | 15.3(100) | - | - |
2007 | - | - | - | - | - | - | - | - | - | - | - | - |
2008 | - | - | - | - | - | - | - | - | - | - | - | - |
2009 | - | - | - | - | - | - | - | - | - | - | - | - |