Year,Value,North America,Temp,Sep,(°F)
1940,56.522
1941,52.112
1942,53.228
1943,53.961
1944,54.717
1945,53.441
1946,54.141
1947,53.837
1948,55.291
1949,54.492
1950,54.249
1951,54.34
1952,54.409
1953,54.83
1954,55.062
1955,54.033
1956,52.706
1957,54.916
1958,54.4
1959,53.851
1960,54.573
1961,52.768
1962,53.68
1963,54.372
1964,53.064
1965,51.377
1966,55.077
1967,54.565
1968,54.522
1969,53.899
1970,53.101
1971,54.061
1972,51.5
1973,54.48
1974,52.053
1975,53.208
1976,54.352
1977,54.88
1978,53.894
1979,54.894
1980,53.212
1981,54.487
1982,54.118
1983,54.565
1984,52.242
1985,53.198
1986,52.934
1987,55.529
1988,54.412
1989,54.547
1990,55.113
1991,54.098
1992,52.115
1993,52.791
1994,55.343
1995,55.034
1996,54.065
1997,55.953
1998,57.462
1999,55.063
2000,54.018
2001,56.101
2002,56.147
2003,55.31
2004,54.607
2005,56.364
2006,55.497
2007,55.115
2008,54.774
2009,57.074
2010,55.862
2011,56.969
2012,57.023
2013,56.233
2014,54.95
2015,56.897
2016,56.583
2017,56.67
2018,54.415
2019,57.396
2020,55.74
2021,57.134
2022,57.81
2023,58.628
2024,59.165
2025,58.317