Year,Value,Chautauqua NY (County),Clouds,May,(%) 1940,69.953 1941,55.672 1942,72.145 1943,78.912 1944,67.959 1945,74.224 1946,67.759 1947,66.67 1948,61.407 1949,51.974 1950,59.157 1951,49.201 1952,59.676 1953,70.306 1954,57.272 1955,58.094 1956,67.144 1957,60.386 1958,52.405 1959,62.662 1960,67.798 1961,57.288 1962,56.285 1963,53.694 1964,50.66 1965,51.535 1966,56.227 1967,61.754 1968,70.302 1969,51.826 1970,55.381 1971,49.931 1972,54.171 1973,72.899 1974,62.589 1975,58.195 1976,64.551 1977,41.027 1978,60.048 1979,54.477 1980,56.965 1981,62.049 1982,62.358 1983,60.249 1984,67.169 1985,61.347 1986,59.463 1987,47.098 1988,53.529 1989,71.963 1990,67.706 1991,51.322 1992,49.248 1993,52.254 1994,58.706 1995,63.107 1996,64.706 1997,65.754 1998,59.223 1999,52.96 2000,65.936 2001,58.203 2002,60.878 2003,71.739 2004,70.101 2005,46.832 2006,57.725 2007,43.032 2008,63.479 2009,61.631 2010,55.441 2011,72.789 2012,50.483 2013,57.59 2014,61.872 2015,61.169 2016,62.251 2017,70.532 2018,65.317 2019,72.594 2020,63.382 2021,57.532 2022,67.265 2023,45.07 2024,61.647 2025,67.729