Year,Value,Asia,Temp,Jan,(°F) 1940,15.433 1941,18.235 1942,19.763 1943,17.704 1944,19.878 1945,15.49 1946,18.222 1947,16.433 1948,19.553 1949,19.928 1950,17.181 1951,15.57 1952,17.836 1953,17.278 1954,16.453 1955,18.737 1956,15.822 1957,16.972 1958,17.951 1959,17.629 1960,16.604 1961,17.128 1962,19.279 1963,19.662 1964,16.692 1965,18.141 1966,18.026 1967,16.372 1968,17.247 1969,12.911 1970,17.173 1971,18.174 1972,14.717 1973,16.682 1974,15.068 1975,19.259 1976,19.896 1977,13.201 1978,17.362 1979,16.329 1980,16.712 1981,20.417 1982,17.876 1983,19.873 1984,18.543 1985,17.165 1986,18.22 1987,17.866 1988,19.615 1989,17.716 1990,16.645 1991,19.789 1992,19.757 1993,19.289 1994,18.503 1995,20.348 1996,17.574 1997,19.183 1998,17.233 1999,19.425 2000,17.591 2001,16.248 2002,21.605 2003,20.298 2004,20.299 2005,19.723 2006,15.887 2007,22.971 2008,16.127 2009,20.043 2010,18.726 2011,17.056 2012,17.248 2013,18.282 2014,18.164 2015,21.285 2016,20.298 2017,21.086 2018,19.052 2019,21.168 2020,22.762 2021,17.366 2022,21.595 2023,18.076 2024,21.296 2025,22.37