Year	current US$
1970	252799994.23585862
1971	252319997.9793276
1972	310079994.70271194
1973	520470006.631688
1974	529159994.8368971
1975	503159998.1095639
1976	542989998.523146
1977	512830004.7349188
1978	980269992.1373277
1979	1235379991.5574493
1980	1270870007.697492
1981	1242519982.9656634
1982	1221499987.078832
1983	1203310003.2918148
1984	1031840009.184554
1985	1162300003.124402
1986	2156579997.6121626
1987	2889570019.6325774
1988	3668649914.5962296
1989	3429230016.4476047
1990	3415310017.4386063
1991	5572130038.188777
1992	4595660013.632847
1993	4243340051.3567066
1994	4955129982.512445
1995	4882749998.360872
1996	4416540052.670986
1997	3201839979.3393917
1998	3743539983.8872256
1999	4740619990.704579
2000	4066459955.3644657
2001	3332740020.3198195
2002	2913589980.319144
2003	3409980070.814495
2004	895740002.2000078
2005	2458680003.8665504
2006	1414019989.706576
2007	774990001.991391
2008	947659996.7479706
2009	1211600030.1390886
2010	2345690030.643716
2011	1102869950.6502585
2012	1073959983.9318538
2013	3097330102.2723374
2014	895540044.7547439
2015	1472390047.2223756
2016	1677900038.689382
2017	2811380030.687901
2018	3298390077.4121323
2019	4884240048.639479
2020	6159889986.066148
2021	7607620034.150778
2022	8616479943.051943