Year	current US$
1970	406076802427.79126
1971	439050829350.9432
1972	491254783959.8364
1973	620066647661.4951
1974	760141762358.8602
1975	836823142537.6024
1976	890534390031.8518
1977	993036914825.7551
1978	1072775822928.7101
1979	1228649104360.8484
1980	1430729254810.3984
1981	1662030174750.0916
1982	1639949511199.257
1983	1581802115515.802
1984	1606198792941.729
1985	1665529442840.212
1986	1747023695590.8796
1987	1765982772807.0608
1988	1923177496532.234
1989	2052613515276.6177
1990	2376518183747.52
1991	2483964582258.423
1992	2694450997820.8457
1993	2959838049471.3003
1994	3349580226205.406
1995	3820805607852.1323
1996	4236174820351.9565
1997	4493882031670.982
1998	4444744592262.907
1999	4371056887762.6885
2000	4684810292309.547
2001	4688896143921.34
2002	4793293778021.517
2003	5339471141044.798
2004	6208181928503.067
2005	7257409532702.154
2006	8565625273818.628
2007	10532537620201.832
2008	12273055857739.07
2009	12574070158927.54
2010	15012222291577.484
2011	17124994035811.232
2012	18370572211092.434
2013	19443905289653.66
2014	20494064790591.098
2015	20049076512365.008
2016	20337119635931.062
2017	22223909793386.28
2018	23163906467491.547
2019	23710295474661.883
2020	22780887213296.49
2021	26314712793929.652