Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1955 | - | -12.5 | -19.4 | -23.6 | -32.7 | -28.2 | -30.6 | -22.8 | -35.9 | -18.8 | -8.9 | -5.4 |
1956 | -5.5 | -12.2 | -22.3 | -27.5 | -38.8 | -28.7 | -32.9 | -33.6 | -28.0 | -22.3 | -9.5 | -3.8 |
1957 | -8.0 | -11.3 | -20.4 | -22.0 | -26.6 | -31.7 | -33.2 | -38.6 | -27.7 | -24.8 | -12.8 | -6.2 |
1958 | -8.0 | -16.6 | -23.6 | -29.2 | -33.8 | -32.0 | -33.2 | -33.4 | -28.0 | -20.6 | -13.8 | -10.2 |
1959 | -4.3 | -14.9 | -20.4 | -26.5 | -20.4 | -37.3 | -34.9 | -32.1 | -31.3 | -20.4 | -12.6 | -4.8 |
1960 | -8.1 | -14.4 | -26.2 | -24.6 | -31.7 | -33.6 | -30.7 | -29.5 | -34.0 | -20.3 | -12.8 | -6.8 |
1961 | -7.7 | -12.2 | -21.7 | -32.5 | -21.8 | -32.9 | -37.6 | -37.2 | -33.7 | -16.2 | -12.1 | -6.7 |
1962 | -7.8 | -13.4 | -24.3 | -25.9 | -34.7 | -28.1 | -30.8 | -35.3 | -33.6 | -27.7 | -16.9 | -10.5 |
1963 | -6.6 | -17.2 | -20.4 | -26.2 | -25.3 | -33.8 | -28.4 | -23.0 | -23.4 | -26.7 | -17.8 | -6.6 |
1964 | -6.1(100) | -12.9(100) | -23.1(100) | -34.1(100) | -38.0(100) | -23.8( 98) | -34.9(100) | -38.5(100) | -37.1(100) | -29.2(100) | -15.5( 99) | -6.4( 99) |
1965 | -4.3 | -10.8 | -22.0 | -30.0(100) | -29.9(100) | -31.6(100) | -34.2(100) | -32.7(100) | -28.3(100) | -20.6(100) | -12.6(100) | -6.7(100) |
1966 | -6.6(100) | -14.3(100) | -12.7(100) | -25.9(100) | -30.6(100) | -29.6(100) | -26.3(100) | -36.6(100) | -34.3 | -25.3 | -14.5 | -4.7 |
1967 | -3.3 | -10.6 | -21.6 | -22.9 | -31.6 | -37.1 | -34.6 | -35.3(100) | -30.4(100) | -24.1(100) | -13.5(100) | -6.3(100) |
1968 | -7.7(100) | -11.9(100) | -18.3(100) | -29.0(100) | -25.4(100) | -24.5(100) | -33.0(100) | -33.6( 99) | -31.7(100) | -18.5(100) | -11.2(100) | -5.9(100) |
1969 | -4.3(100) | -15.1(100) | -26.5(100) | -20.9(100) | -25.5( 97) | -27.4(100) | -36.4(100) | -27.3(100) | -24.3(100) | -16.8(100) | -12.7(100) | -4.0(100) |
1970 | -5.9(100) | -10.5(100) | -23.9(100) | -26.5(100) | -30.5(100) | -35.3(100) | -35.1(100) | -35.5(100) | -20.4(100) | -20.9(100) | -12.0(100) | -4.5(100) |
1971 | -5.5(100) | -17.2(100) | -21.4(100) | -23.1 | -32.7 | -38.5 | -35.5 | -27.0 | -36.5 | -24.4 | -13.1 | -4.3 |
1972 | -6.6 | -11.4(100) | -19.1(100) | -28.0(100) | -28.6(100) | -34.5(100) | -36.5(100) | -32.4(100) | -30.4(100) | -24.8(100) | -12.8(100) | -4.3(100) |
1973 | -3.3 | -16.2(100) | -18.1(100) | -24.9(100) | -28.0(100) | -34.8(100) | -37.1(100) | -39.1( 98) | -34.1(100) | -17.5(100) | -10.8(100) | -7.4(100) |
1974 | -5.4(100) | -14.0(100) | -24.1(100) | -28.2(100) | -31.6(100) | -35.9( 98) | -33.5(100) | -29.0(100) | -31.4(100) | -24.7(100) | -11.7(100) | -5.4(100) |
1975 | -7.4(100) | -12.5(100) | -16.1(100) | -29.3(100) | -24.2(100) | -32.3(100) | -32.8(100) | -43.0(100) | -31.5(100) | -16.1(100) | -11.7(100) | -4.7(100) |
1976 | -7.2( 99) | -9.0(100) | -24.9(100) | -29.4(100) | -24.5( 99) | -32.7(100) | -30.7(100) | -29.6(100) | -30.6(100) | -20.0(100) | -11.1(100) | -5.5(100) |
1977 | -5.1(100) | -10.7(100) | -23.8(100) | -25.6(100) | -16.7(100) | -28.2(100) | -33.7(100) | -30.4(100) | -35.3(100) | -23.6( 99) | -13.0(100) | -8.8(100) |
1978 | -7.6( 98) | -12.5(100) | -20.7(100) | -17.7(100) | -26.9(100) | -31.4(100) | -37.6(100) | -29.1(100) | -31.0(100) | -20.1(100) | -13.3(100) | -6.1(100) |
1979 | -4.8(100) | -15.1(100) | -24.5(100) | -18.9(100) | -37.2(100) | -31.9(100) | -40.5(100) | -33.3(100) | -30.6(100) | - | - | - |
1980 | - | - | - | - | - | - | - | - | - | - | - | - |
1981 | - | - | - | - | - | - | - | - | - | - | - | - |
1982 | - | - | - | - | - | - | - | - | - | - | - | - |
1983 | - | - | - | - | - | - | - | - | - | - | - | - |
1984 | - | - | - | - | - | - | - | - | - | - | - | - |
1985 | - | - | - | - | - | - | - | - | - | - | - | - |
1986 | - | - | - | - | - | - | - | - | - | - | - | - |
1987 | - | - | - | - | - | - | - | - | - | - | - | - |
1988 | - | - | - | - | - | - | - | - | - | - | - | - |
1989 | - | - | - | - | - | - | - | - | - | - | - | - |
1990 | - | - | - | - | - | - | - | - | - | - | - | - |
1991 | - | - | - | - | - | - | - | - | - | - | - | - |
1992 | - | - | - | - | - | - | - | - | - | - | - | - |
1993 | - | - | - | - | - | - | - | - | - | - | - | - |
1994 | - | - | - | - | - | - | - | - | - | - | - | - |
1995 | - | - | - | - | - | - | - | - | - | - | - | - |
1996 | - | - | - | - | - | - | - | - | - | - | - | - |
1997 | - | - | - | - | - | - | - | - | - | - | - | - |
1998 | - | - | - | - | - | - | - | - | - | - | - | - |
1999 | - | - | - | - | - | - | - | - | - | - | - | - |
2000 | - | - | - | - | - | - | - | - | - | - | - | - |
2001 | - | - | - | - | - | - | - | - | - | - | - | - |
2002 | - | - | - | - | - | - | - | - | - | - | - | - |
2003 | - | - | - | - | - | - | - | - | - | - | - | - |
2004 | - | - | - | - | - | - | - | - | - | - | - | - |
2005 | - | - | - | - | - | - | - | - | - | - | - | - |
2006 | - | - | - | - | - | - | - | - | - | - | - | - |
2007 | - | - | - | - | - | - | - | - | - | - | - | - |
2008 | - | - | - | - | - | - | - | - | - | - | - | - |
2009 | - | - | - | - | - | - | - | - | - | - | - | - |
2010 | - | - | - | - | - | - | - | - | - | - | - | - |
2011 | - | - | - | - | - | - | - | - | - | - | - | - |
2012 | - | - | - | - | - | - | - | - | - | - | - | - |
2013 | - | - | - | - | - | - | - | - | - | - | - | - |
2014 | - | - | - | - | - | - | - | - | - | - | - | - |
2015 | - | - | - | - | - | - | - | - | - | - | - | - |
2016 | - | - | - | - | - | - | - | - | - | - | - | - |
2017 | - | - | - | - | - | - | - | - | - | - | - | - |
2018 | - | - | - | - | - | - | - | - | - | - | - | - |
2019 | - | - | - | - | - | - | - | - | - | - | - | - |
2020 | - | - | - | - | - | - | - | - | - | - | - | - |
2021 | - | - | - | - | - | - | - | - | - | - | - | - |
2022 | - | - | - | - | - | - | - | - | - | - | - | - |
2023 | - | - | - | - | - | - | - | - | - | - | - | - |
2024 | - | - | - | - | - | - | - | - | - | - | - | - |