Year,Value,Canada (Country),Temp,May-Sep,(°F) 1948,47.973 1949,46.422 1950,46.221 1951,46.942 1952,47.374 1953,46.91 1954,47.353 1955,47.722 1956,44.85 1957,46.371 1958,46.858 1959,45.399 1960,47.385 1961,46.882 1962,46.223 1963,46.157 1964,45.835 1965,44.976 1966,47.021 1967,46.57 1968,45.813 1969,45.585 1970,46.439 1971,47.166 1972,44.563 1973,48.311 1974,45.45 1975,47.753 1976,47.117 1977,47.014 1978,45.107 1979,46.561 1980,46.978 1981,47.998 1982,46.491 1983,46.836 1984,47.271 1985,46.885 1986,46.022 1987,47.248 1988,47.975 1989,48.201 1990,47.301 1991,48.257 1992,44.879 1993,47.15 1994,48.485 1995,48.165 1996,47.371 1997,47.565 1998,50.551 1999,47.947 2000,46.678 2001,48.85 2002,47.051 2003,48.586 2004,46.124 2005,48.097 2006,49.81 2007,47.667 2008,48.384 2009,47.457 2010,48.818 2011,49.05 2012,50.424 2013,48.668 2014,48.625 2015,48.837 2016,49.81 2017,49.305 2018,47.138 2019,48.503 2020,48.54 2021,49.083 2022,49.926 2023,51.797 2024,50.954 2025,49.807