Year	current US$
1960	15161980.495207803
1961	16575972.089611165
1962	15875983.569606572
1963	18101979.31920827
1964	20019969.592012163
1965	20215991.913603235
1966	23967990.412803836
1967	25283989.886404045
1968	28167988.732804507
1969	30957142.85714286
1970	33285714.285714287
1971	32124309.01172439
1972	85385290.37803765
1973	99020954.86746795
1974	115011914.21763304
1975	144400297.37887213
1976	136775198.09372517
1977	70297117.68115942
1978	106353591.160221
1979	234908069.2913386
1980	94263574.44147182
1981	154216867.4698795
1982	102865681.18564245
1983	145536803.8854463
1984	133825795.54251307
2013	271401161.4240999
2014	319089911.3547496
2015	327416700.0846243
2016	390717303.14891064
2017	485856924.0163715
2018	494791779.5898741
2019	528670841.7176201
2020	595036115.4380653
2021	676471047.4356904
2022	758733752.2323184
2023	817404340.010154