Year	current US$
1970	5530000.137165184
1971	13820000.052452087
1972	830000.0280141872
1973	15389999.916777015
1974	22659999.439492777
1975	54350000.290200144
1976	12209999.896585938
1977	9180000.051856052
1978	15260000.128299005
1979	16869999.624788765
1980	43000000.327825576
1981	70449998.48306179
1982	109539996.47498131
1983	108049998.40073287
1984	91050002.90274622
1985	108139996.21197575
1986	77129996.95539476
1987	79589996.52042982
1988	83739999.24957748
1989	49760001.26078722
1990	81870000.53748488
1991	127579997.15022747
1992	228539993.39044094
1993	116519998.13318251
1994	95859998.6433983
1995	24970000.527799122
1996	9319999.799132345
1997	36380000.0548363
1998	19870000.24318695
1999	26369999.6471405
2000	23579999.208450314
2001	22840000.588446893
2002	23229999.64095653
2003	30600000.273436286
2004	17249999.660998575
2005	151649997.87509415
2006	36569999.81403352
2007	22210000.37342307
2008	36889999.73237513
2009	30499999.791383736
2010	22939999.438822273
2011	74380000.41618942
2012	61039826.51233666
2013	49934889.912605286
2014	27578289.628028877
2015	27182499.617338177
2016	30511504.445224985
2017	36159300.01065139
2018	6797078.46045494
2019	23732914.388179787
2020	36437918.54381558
2021	57468609.69066624
2022	42847454.36906814