Year	current US$
1970	1010000.0184029348
1971	3330000.1006573415
1972	2650000.005960471
1973	10540000.289678577
1974	13089999.627321959
1975	22270000.845193863
1976	17739999.696612358
1977	38029999.31573863
1978	59359999.299049355
1979	90440001.08540055
1980	104699997.78084454
1981	70510000.48965216
1982	45079999.94233252
1983	68070000.78633438
1984	94580000.40054327
1985	80369997.53490093
1986	108810001.19447711
1987	111000000.39115542
1988	141839998.84128603
1989	44640000.00432132
1990	65020000.94391403
1991	89120001.35518612
1992	109090000.74863441
1993	71590000.98705296
1994	61890000.28371813
1995	67239999.27565466
1996	30079998.73161311
1997	38819999.81403344
1998	30269999.38488013
1999	19440000.344067805
2000	29020000.12248759
2001	21870000.157505304
2002	19120000.490918756
2003	17150000.050663922
2004	13470000.077039
2005	20880000.069737438
2006	75689999.75919722
2007	16450000.610202558
2008	19389999.926090244
2009	12610000.014305111
2010	11040000.17046928
2011	15359999.984502787
2012	10309720.337390907
2013	7903613.100294016
2014	6084430.038928981
2015	6927055.098116394
2016	7815222.982317211
2017	3081559.9411725965
2018	8640689.134597778
2019	14341980.23378849
2020	13555316.29174948
2021	14941389.650106458
2022	12436124.18323755