Year	current US$
1976	5363975206.72731
1977	7946966942.22973
1978	12462942148.748
1979	15028669421.8218
1980	10139303104.8028
1981	10765429382.2233
1982	12455424247.2707
1983	17052898808.7611
1984	21233390407.9841
1985	21605936790.0733
1986	28554398977.8936
1987	41104735841.9797
1988	59277823572.9954
1989	66193323304.8457
1990	74999356618.1637
1991	88943449919.0589
1992	89311384241.719
1993	97868996068.1493
1994	115611338218.378
1995	131676088387.957
1996	127508990468.974
1997	114961673308.573
1998	74523375210.1561
1999	88973072621.9261
2000	96276557350.1149
2001	80215651111.5797
2002	92838461390.2003
2003	112700793573.612
2004	146919091833.105
2005	156153317880.954
2006	165903513908.61
2007	195289481686.307
2008	160228352655.441
2009	136891802571.563
2010	194079206612.728
2011	201839783763.815
2012	200491558375.686
2013	218945058962.89
2014	238953345899.334
2015	259024542208.726
2016	273645371317.143
2017	300590078109.176
2018	292100448529.142
2019	246783581032.934
2020	257008525102.035
2021	284549346345.653