Year	current US$
1970	10859999.9547005
1971	13440000.1466274
1972	18639999.7156113
1973	16360000.2620369
1974	27790000.1369417
1975	34989999.5215237
1976	23640000.216662902
1977	31019999.429583598
1978	46470000.4160404
1979	73020000.2491474
1980	76419999.3610382
1981	64649999.32050711
1982	65850001.037120804
1983	67919999.1077185
1984	65399999.8569489
1985	63439999.5803833
1986	77620000.243187
1987	85440000.6830692
1988	103100000.679493
1989	121419999.718666
1990	142370000.431314
1991	104159998.178482
1992	142699998.855591
1993	127950000.405312
1994	145199999.809265
1995	123750000.059605
1996	121730003.17812
1997	74260000.705719
1998	68109999.537468
1999	66930000.364780396
2000	70500000.1192093
2001	73430000.1263618
2002	67329999.2084503
2003	71139998.8532066
2004	71859999.1202354
2005	84729998.588562
2006	92570001.9598007
2007	107080000.400543
2008	122479997.873306
2009	137540000.200272
2010	140760001.599789
2011	137030001.819134
2012	116734631.150961
2013	125040709.82337
2014	145701028.70464298
2015	153511723.995209
2016	171207560.896873
2017	177535482.048988
2018	173188024.878502
2019	179982001.54304498
2020	160191002.607346
2021	142851998.746395
2022	135049001.03807443