Year	current US$
1970	64099999.76679683
1971	72989999.73200259
1972	79110000.02175567
1973	86260000.39465727
1974	89640000.85182488
1975	134480000.14573336
1976	132410000.96499918
1977	124369999.60988759
1978	152539999.42168596
1979	191310000.55931512
1980	259759998.9473821
1981	350570004.1055681
1982	305810001.00076187
1983	256390000.8723139
1984	251779998.31363562
1985	286760001.6891956
1986	324240001.23888254
1987	336739999.86052513
1988	390959999.71032166
1989	428249999.3592501
1990	384759999.23050416
1991	425120002.0313265
1992	372030002.61262083
1993	318240001.3394653
1994	262709997.80111027
1995	248650000.61690807
1996	292589998.2638656
1997	353979998.29985183
1998	319690000.9792297
1999	280270000.8936227
2000	206299997.91085723
2001	169790000.43123955
2002	167019999.7536839
2003	184919999.42623085
2004	237170000.4339218
2005	242170001.14917755
2006	269810000.74744225
2007	268049999.74369994
2008	327640000.61154354
2009	349789999.58932406
2010	334530000.74625015
2011	275169999.15055925
2012	269664531.3009193
2013	263082490.78877273
2014	272706754.73846483
2015	248255647.19177788
2016	229806014.90661508
2017	219641354.82683563
2018	210775207.58844915
2019	263695595.97969055
2020	299610859.72189903
2021	285861407.1458578
2022	306389277.50289434