Year	current US$
1970	79979999.10824004
1971	76680000.67584218
1972	82109999.66971566
1973	142840001.8047541
1974	198070000.99681318
1975	292409998.1617183
1976	213620001.7314403
1977	266720001.7273426
1978	480719997.58295715
1979	657960004.6724079
1980	641010000.4486741
1981	626089997.9248642
1982	654370001.1074544
1983	626079997.9567528
1984	547970000.9003284
1985	569179998.4276296
1986	752199995.6071378
1987	923070008.3263217
1988	937790004.8494339
1989	1010120000.6902218
1990	1376789996.7134004
1991	1347410009.2649457
1992	1259770008.8620183
1993	1288590000.0818076
1994	1172539990.160615
1995	1256770002.1266937
1996	1201320003.6566706
1997	908280007.6082346
1998	995880003.2213331
1999	896469994.8988855
2000	750570001.7232451
2001	625459996.6239183
2002	869419995.0266627
2003	1875660010.3154774
2004	1166199995.9424138
2005	2358719995.466995
2006	3067370045.367631
2007	1879800023.4365468
2008	2124600020.4309826
2009	1457709996.031597
2010	1434509989.9694324
2011	1817740006.1972444
2012	2021599981.9450095
2013	1389980004.8545003
2014	1469640009.8726158
2015	1609640007.399023
2016	1919110000.4185
2017	2175319998.851047
2018	2432860006.0176096
2019	2500740016.294645
2020	3093680013.6547546
2021	3060840003.712103
2022	2456410013.2845335