Year,Value,Contiguous U.S. (Lower 48),Temp,Jul,(°F)
1940,73.567
1941,73.523
1942,74.068
1943,74.427
1944,73.426
1945,72.782
1946,74.03
1947,72.602
1948,73.891
1949,74.658
1950,71.538
1951,74.366
1952,74.762
1953,74.844
1954,75.99
1955,74.751
1956,73.522
1957,74.991
1958,73.133
1959,74.153
1960,74.696
1961,73.743
1962,72.59
1963,74.253
1964,75.193
1965,73.181
1966,75.757
1967,72.941
1968,73.328
1969,74.586
1970,74.581
1971,72.967
1972,72.657
1973,73.86
1974,74.726
1975,74.152
1976,73.415
1977,74.894
1978,74.367
1979,74.04
1980,76.601
1981,74.577
1982,73.765
1983,74.767
1984,73.799
1985,74.739
1986,73.994
1987,73.886
1988,75.62
1989,75.018
1990,73.877
1991,74.534
1992,71.688
1993,72.839
1994,74.571
1995,74.476
1996,74.164
1997,73.522
1998,75.71
1999,74.777
2000,74.545
2001,74.993
2002,76.434
2003,76.322
2004,73.666
2005,76.431
2006,77.454
2007,75.78
2008,75.149
2009,73.689
2010,75.714
2011,77.209
2012,77.752
2013,75.253
2014,74.016
2015,74.897
2016,76.441
2017,76.895
2018,76.558
2019,75.921
2020,76.837
2021,76.479
2022,77.63
2023,77.071
2024,76.428