Year	current US$
1970	118389257.416055
1971	133279194.118772
1972	170565655.292455
1973	248636198.578476
1974	309249761.981599
1975	327020193.080738
1976	360266652.993925
1977	436500758.757922
1978	496762691.4008
1979	576309226.676711
1980	673291339.788639
1981	705526156.549322
1982	682219971.817429
1983	624108566.41662
1984	604650951.086678
1985	624396239.612196
1986	797917626.258693
1987	1005600982.05453
1988	1117592706.16622
1989	1095335183.88894
1990	1253142274.76159
1991	1236431749.99317
1992	1238124116.21372
1993	1063911882.31873
1994	1040707033.58128
1995	1097597154.67079
1996	1062185925.58234
1997	995109204.283311
1998	1057713526.69096
1999	1154732981.76223
2000	1116520021.99113
2001	1081771743.41075
2002	1211708335.05121
2003	1498821384.82632
2004	1736638015.69136
2005	2145205245.7776
2006	2391361543.28476
2007	3039589820.11566
2008	2951378702.75268
2009	2467251977.0513
2010	2489415917.51166
2011	2608843630.02947
2012	2526964673.28967
2013	2626945973.84385
2014	2764345268.24015
2015	2561088602.78657
2016	3083374864.76822
2017	3967331402.19506
2018	4317225663.6926
2019	3907425192.02374
2020	3480399766.93114
2021	4184999548.94938