Year,Value,Contiguous U.S. (Lower 48),Precip,Jan-Dec,(in.)
1940,100.0
1941,100.0
1942,100.0
1943,100.0
1944,100.0
1945,100.0
1946,100.0
1947,100.0
1948,100.0
1949,100.0
1950,100.0
1951,100.0
1952,100.0
1953,100.0
1954,100.0
1955,100.0
1956,100.0
1957,100.0
1958,100.0
1959,100.0
1960,100.0
1961,100.0
1962,100.0
1963,100.0
1964,100.0
1965,100.0
1966,100.0
1967,100.0
1968,100.0
1969,100.0
1970,100.0
1971,100.0
1972,100.0
1973,100.0
1974,100.0
1975,100.0
1976,100.0
1977,100.0
1978,100.0
1979,100.0
1980,100.0
1981,100.0
1982,100.0
1983,100.0
1984,100.0
1985,100.0
1986,100.0
1987,100.0
1988,100.0
1989,100.0
1990,100.0
1991,100.0
1992,100.0
1993,100.0
1994,100.0
1995,100.0
1996,100.0
1997,100.0
1998,100.0
1999,100.0
2000,100.0
2001,100.0
2002,100.0
2003,100.0
2004,100.0
2005,100.0
2006,100.0
2007,100.0
2008,100.0
2009,100.0
2010,100.0
2011,100.0
2012,100.0
2013,100.0
2014,100.0
2015,100.0
2016,100.0
2017,100.0
2018,100.0
2019,100.0
2020,100.0
2021,100.0
2022,100.0
2023,100.0
2024,100.0