Year	current US$
1970	5069999.964907762
1971	6859999.965876346
1972	16470000.199973583
1973	11259999.947622422
1974	43290000.16301866
1975	31730000.06377693
1976	16179999.990388755
1977	18839999.99240041
1978	38569999.6687472
1979	63590000.826865375
1980	55520000.22679571
1981	72700000.64186753
1982	112409998.77080323
1983	66289999.45893885
1984	85849999.02546406
1985	47570000.171661384
1986	53470000.423491016
1987	65979999.430477634
1988	68080001.18285419
1989	105549999.3208795
1990	83560000.35256152
1991	77280000.2712756
1992	83699999.50192872
1993	83689999.43137169
1994	119000000.3892927
1995	117859999.80568896
1996	120779999.24495818
1997	105870000.61012805
1998	92619999.93771304
1999	142619996.547699
2000	188380002.2304058
2001	132369999.99172989
2002	152500001.85146937
2003	178290002.03683972
2004	263470004.27916604
2005	298070005.11325896
2006	312559998.88479686
2007	489490006.5530095
2008	605119999.7067451
2009	528099994.92019427
2010	796140002.6232
2011	1056250013.5004518
2012	1179989989.4371629
2013	942790003.933012
2014	830580002.6189535
2015	588740000.7862597
2016	494019995.6558648
2017	614589992.0295923
2018	528430004.8332664
2019	518950001.7892574
2020	472979999.42302716
2021	679060000.5388256
2022	607660009.6058102