Year	current US$
1970	477546055283.88727
1971	516908383662.3244
1972	576536022187.4736
1973	728930387533.6969
1974	888620870738.7473
1975	969366370689.0573
1976	1035894003084.8008
1977	1162311405481.2207
1978	1254650651652.7197
1979	1437108188141.9714
1980	1686590515106.9792
1981	1962844737955.9104
1982	1931648019246.6487
1983	1850837307672.845
1984	1869430815929.2803
1985	1938237464412.7236
1986	2031763690346.6199
1987	2052693874375.01
1988	2234681935831.5444
1989	2364136208844.295
1990	2725320400949.285
1991	2860321568726.1953
1992	3115381537884.572
1993	3378419706741.354
1994	3773595898868.044
1995	4312683888865.845
1996	4783480091223.017
1997	5085363641725.226
1998	4986100136467.982
1999	4861468388688.772
2000	5238862629316.471
2001	5302562476664.677
2002	5418521128599.559
2003	6051911341639.031
2004	7142768778771.632
2005	8442526131293.099
2006	10035754350264.5
2007	12466478037797.617
2008	14717530493239.303
2009	14546604244513.81
2010	17357481736311.594
2011	19884942666023.42
2012	21292283866811.176
2013	22456928810084.875
2014	23408832964555.207
2015	22201154190621.17
2016	22421478694389.113
2017	24651463304599.082
2018	25739743291016.9
2019	26322831780897.11
2020	25227372222741.24
2021	29058641357501.43