Year	current US$
1981	12100327032.3541
1982	8403781604.06651
1983	15326351936.1389
1984	15316223085.2957
1985	15796214450.6623
1986	12809198394.3485
1987	14499449094.7086
1988	15648349228.5656
1989	20004869546.6711
1990	18518978360.6564
1991	19903861065.7342
1992	23421383850.9929
1993	37908767473.5439
1994	43985107170.6661
1995	46757527409.5176
1996	51844680182.8945
1997	51833023736.2271
1998	16623032861.0187
1999	11475592679.4952
2000	35085384669.7311
2001	14056833710.3162
2002	9018684501.59567
2003	5241343334.27917
2004	5807232781.43708
2005	17098180545.8521
2006	27100813295.9535
2007	29544302400.2093
2008	51693056543.7712
2009	57883019972.5461
2010	109314317269.028
2011	134379971430.794
2012	123777781800.373
2013	116215133089.673
2014	107760418456.516
2015	104257482332.638
2016	125878533247.573
2017	131933357121.774
2018	133523455640.706
2019	121899579433.818
2020	100544559578.899
2021	157759463324.474