Year,Value,Contiguous U.S. (Lower 48),Temp,Jun,(°F)
1940,69.226
1941,67.009
1942,67.406
1943,68.62
1944,68.259
1945,65.45
1946,67.926
1947,65.671
1948,69.364
1949,69.72
1950,68.528
1951,67.303
1952,71.522
1953,70.81
1954,69.414
1955,67.221
1956,71.1
1957,69.066
1958,68.578
1959,70.605
1960,69.875
1961,70.223
1962,68.439
1963,69.168
1964,68.615
1965,67.237
1966,68.771
1967,67.831
1968,69.068
1969,67.293
1970,69.42
1971,69.983
1972,68.795
1973,69.565
1974,69.518
1975,68.138
1976,68.49
1977,70.979
1978,69.751
1979,68.847
1980,69.739
1981,70.587
1982,67.096
1983,67.857
1984,69.278
1985,69.011
1986,71.027
1987,71.065
1988,71.936
1989,68.926
1990,71.305
1991,69.836
1992,68.27
1993,68.039
1994,71.935
1995,68.222
1996,70.331
1997,68.653
1998,68.497
1999,68.725
2000,69.477
2001,69.905
2002,71.6
2003,68.69
2004,68.817
2005,70.224
2006,71.983
2007,71.119
2008,70.626
2009,69.368
2010,71.456
2011,70.977
2012,72.304
2013,71.612
2014,70.328
2015,72.419
2016,73.146
2017,71.766
2018,72.861
2019,70.054
2020,71.813
2021,74.14
2022,72.32
2023,70.355
2024,72.747
2025,72.225