1958 -36.2 -50.4 -61.2 -67.3 -66.9 -71.7 -69.7 -76.3 -71.5 -65.3 -50.2 -38.9 1959 -40.0 -49.3 -56.9 -66.0 -67.1 -70.0 -72.1 -73.7 -72.8 -63.0 -50.3 -37.6 1960 -41.1 -49.7 -66.1 -70.5 -71.2 -74.3 -72.2 -74.9 -70.8 -64.9 -52.1 -39.2 1961 -39.2 -48.8 -62.3 -67.5 -68.8 -64.2 -67.9 -70.2 -66.5 -60.5 -50.1 -39.6 1962 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 1963 -999.0 -51.8 -63.7 -67.5 -69.4 -62.0 -67.9 -67.9 -63.0 -64.2 -51.6 -38.6 1964 -37.3 -51.3 -64.8 -72.8 -72.3 -64.9 -69.7 -66.3 -74.4 -64.5 -48.8 -37.8 1965 -39.4 -48.5 -62.5 -69.9 -67.9 -71.1 -72.5 -70.4 -71.8 -63.3 -51.8 -39.4 1966 -41.6 -48.8 -58.7 -69.9 -70.9 -71.9 -70.8 -74.5 -72.3 -63.4 -49.4 -37.2 1967 -35.6 -51.7 -58.3 -68.6 -71.3 -69.6 -70.2 -75.7 -68.4 -63.4 -47.6 -36.6 1968 -39.1 -50.3 -61.9 -65.3 -68.7 -68.6 -74.6 -73.2 -75.1 -60.4 -49.0 -38.6 1969 -38.3 -50.1 -64.5 -65.7 -69.8 -65.9 -73.7 -72.9 -73.4 -62.1 -50.2 -37.7 1970 -36.3 -49.7 -58.5 -66.7 -69.2 -66.2 -70.2 -73.4 -68.6 -61.4 -51.3 -38.5 1971 -35.2 -46.9 -62.2 -67.8 -67.0 -69.7 -72.3 -70.2 -67.4 -62.6 -50.0 -36.0 1972 -37.0 -50.7 -61.5 -67.7 -68.8 -70.0 -72.3 -65.7 -66.8 -66.4 -50.5 -39.5 1973 -39.6 -50.5 -63.9 -64.5 -67.9 -68.7 -72.1 -75.0 -67.7 -62.3 -46.8 -39.7 1974 -34.6 -53.5 -66.2 -71.3 -70.8 -66.2 -69.6 -71.6 -72.3 -61.2 -48.3 -37.6 1975 -37.4 -50.5 -60.3 -64.4 -65.8 -69.6 -73.1 -75.9 -73.3 -61.5 -47.8 -36.1 1976 -37.8 -48.8 -61.2 -68.9 -73.9 -69.1 -66.5 -69.0 -71.8 -63.4 -49.2 -34.3 1977 -34.9 -48.7 -61.1 -69.7 -66.7 -67.0 -67.8 -70.1 -74.3 -65.3 -51.5 -37.2 1978 -39.8 -49.1 -62.3 -67.7 -68.0 -68.2 -67.7 -76.7 -68.3 -64.6 -47.6 -34.9 1979 -36.7 -51.0 -63.7 -65.5 -72.1 -73.0 -75.4 -71.4 -71.6 -66.4 -50.1 -36.8 1980 -34.8 -49.0 -58.6 -64.1 -69.4 -65.0 -69.0 -66.5 -67.5 -65.3 -49.5 -37.3 1981 -38.2 -50.9 -60.1 -70.8 -73.3 -70.7 -67.3 -65.6 -65.6 -65.0 -50.8 -37.1 1982 -38.0 -50.7 -67.9 -999.0 -67.7 -71.6 -68.7 -75.5 -75.5 -63.5 -44.4 -36.4 1983 -37.1 -50.1 -61.6 -66.6 -64.4 -66.8 -76.7 -70.7 -65.6 -63.9 -52.5 -39.0 1984 -37.5 -53.2 -61.2 -66.3 -64.9 -73.2 -68.8 -71.9 -67.0 -64.0 -47.8 -35.4 1985 -36.1 -52.1 -63.1 -65.5 -71.0 -70.0 -74.0 -70.5 -70.3 -64.2 -50.9 -37.5 1986 -35.3 -45.1 -62.3 -69.7 -69.5 -74.0 -72.5 -73.0 -70.5 -63.6 -48.9 -37.8 1987 -36.1 -51.3 -61.6 -67.6 -69.5 -64.4 -68.9 -77.8 -71.5 -62.5 -51.7 -38.6 1988 -37.2 -51.8 -59.8 -68.2 -67.3 -67.6 -73.5 -70.4 -69.3 -61.0 -49.2 -39.4 1989 -40.2 -50.5 -60.5 -69.2 -72.2 -71.4 -71.3 -68.8 -65.4 -60.6 -49.0 -33.3 1990 -35.7 -49.9 -62.7 -65.5 -69.4 -69.1 -70.4 -73.0 -70.1 -63.2 -47.9 -34.1 1991 -37.4 -47.3 -61.1 -65.0 -70.8 -66.1 -62.5 -70.4 -71.9 -64.1 -999.0 -999.0 1992 -44.0 -46.5 -60.8 -69.1 -69.5 -67.5 -71.3 -67.9 -71.6 -64.0 -48.7 -38.8 1993 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 1994 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 1995 -38.7 -48.9 -61.6 -68.2 -71.9 -71.4 -60.8 -70.5 -73.2 -64.0 -49.5 -37.7 1996 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 1997 -39.2 -50.8 -62.0 -67.4 -71.4 -67.7 -75.7 -74.9 -70.6 -65.4 -46.0 -999.0 1998 -38.6 -49.6 -64.3 -71.6 -68.9 -70.8 -72.2 -71.2 -76.1 -67.6 -48.7 -37.0 1999 -36.4 -50.6 -61.4 -73.3 -72.8 -68.7 -73.4 -71.6 -71.8 -64.8 -49.0 -40.7 2000 -39.2 -51.1 -64.7 -68.0 -71.9 -64.3 -71.1 -71.2 -70.8 -67.5 -47.2 -36.4 2001 -37.5 -49.8 -63.1 -66.9 -67.6 -70.5 -70.4 -72.4 -70.3 -63.1 -46.7 -36.2 2002 -34.2 -51.3 -61.5 -65.8 -63.9 -69.8 -69.1 -74.8 -71.6 -62.0 -50.0 -40.2 2003 -37.4 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 2004 -999.0 -999.0 -60.9 -66.6 -67.7 -70.1 -74.5 -67.3 -70.9 -62.7 -48.2 -36.1 2005 -36.7 -49.9 -59.8 -68.8 -70.4 -68.0 -67.1 -72.1 -68.3 -60.3 -48.6 -34.7 2006 -38.5 -50.5 -61.9 -66.3 -69.4 -68.0 -70.4 -68.7 -69.3 -62.8 -49.3 -38.3 2007 -36.5 -51.4 -60.6 -64.9 -62.4 -63.2 -68.7 -67.2 -67.8 -60.7 -48.0 -37.2 2008 -38.6 -51.4 -58.2 -66.4 -69.5 -73.5 -68.6 -73.8 -72.0 -52.3 -46.2 -36.5 2009 -36.2 -45.2 -61.2 -70.3 -66.7 -66.0 -64.5 -72.3 -68.3 -62.7 -46.6 -37.0 2010 -35.4 -49.1 -59.4 -70.7 -67.5 -72.0 -73.0 -75.0 -69.4 -64.0 -50.4 -36.5 2011 -36.1 -47.6 -61.7 -64.8 -70.4 -71.9 -66.0 -64.7 -68.3 -61.2 -47.2 -36.2 2012 -36.9 -51.7 -62.2 -68.1 -70.6 -72.4 -73.5 -74.0 -73.7 -60.6 -47.2 -35.3 2013 -37.9 -52.8 -64.6 -67.3 -70.8 -67.0 -69.8 -66.6 -64.7 -61.2 -46.0 -36.4 2014 -35.5 -50.6 -63.2 -68.6 -66.3 -66.7 -71.4 -69.0 -65.9 -59.8 -46.0 -37.7 2015 -37.1 -49.9 -61.5 -68.1 -73.6 -67.9 -70.5 -74.0 -70.7 -58.1 -46.2 -36.0 2016 -38.7 -49.9 -63.8 -68.5 -68.2 -74.1 -74.5 -70.0 -69.9 -63.8 -45.9 -37.1 2017 -36.9 -49.2 -62.1 -70.3 -67.6 -72.3 -68.9 -69.9 -69.7 -56.9 -45.7 -37.5 2018 -37.2 -49.9 -60.7 -65.4 -63.8 -66.2 -68.7 -68.0 -67.8 -59.5 -48.6 -33.7 2019 -36.0 -47.1 -62.3 -68.5 -71.5 -73.2 -68.0 -69.1 -68.5 -59.2 -47.3 -36.0 2020 -36.1 -50.0 -64.3 -64.9 -66.6 -68.3 -66.3 -70.3 -64.4 -62.3 -44.7 -37.2 2021 -37.5 -50.3 -61.3 -66.2 -71.6 -73.1 -70.0 -67.3 -67.8 -59.5 -48.1 -34.4 2022 -38.1 -47.4 -57.6 -70.3 -69.3 -65.4 -71.2 -70.4 -71.9 -62.2 -50.7 -39.3 2023 -39.8 -48.9 -61.9 -65.9 -71.7 -66.9 -69.6 -74.5 -67.6 -63.7 -51.7 -39.4