Year	current US$
1970	31718600
1971	34972200
1972	33377726.6304
1973	40969996.0812672
1974	50552876.6483328
1975	58125662.0928
1976	64819503
1977	88558059.6697344
1978	98282202.5305344
1979	103579503
1980	127207830.4512
1981	138365676.320602
1982	111844196.1
1983	123044104.510992
1984	127533675.608748
1985	131500802.326132
1986	96614165.3550083
1987	95065823.9452032
1988	105531903.329249
1989	113324593.510764
1990	89453102.6082305
1991	111639572.868818
1992	133897948.149151
1993	180504679.135466
1994	179945297.955209
1995	217444566.395896
1996	231674034.180458
1997	275292990.543302
1998	301337437.65585
1999	312001213.459811
2000	357998206.386725
2001	371969233.942008
2002	439598780.165561
2003	497063570.063257
2004	577355384.388773
2005	695875984.203259
2006	813791107.252782
2007	955574915.058709
2008	1094438966.99736
2009	1050043280.60123
2010	1141710787.0039
2011	1344397941.70499
2012	1427927432.04657
2013	1469999292.72477
2014	1670630206.66396
2015	1813044949.14244
2016	1895243897.25919
2017	2020678259.86392
2018	2125231877.86858
2019	2337521640.69215
2020	2439263862.61792
2021	2578912156.20846