Year	current US$
1976	588000000
1977	804000000
1978	1374000000
1979	2530000000
1980	3640000000
1981	3230000000
1982	1869000000
1983	2026000000
1984	2156000000
1985	2017000000
1986	2290000000
1987	2364000000
1988	2455000000
1989	2534000000
1990	2876000000
1991	3769000000
1992	5252400000
1993	6106700000
1994	6856100000
1995	6961200000
1996	7623604066.21809
1997	8675186708.78594
1998	9047117536.80135
1999	8569076780.516821
2000	8920103786.79057
2001	8209442433.16695
2002	4683920000
2003	5359410000
2004	6266940000
2005	7235090000
2006	8392832519.761101
2007	10720518519.887
2008	13279802098.4796
2009	12171214813.239
2010	14265070010.5205
2011	17297523312.4599
2012	17921330453.5296
2013	18625835883.7141
2014	17628881981.1276
2015	18700914750.275917
2016	21625551250.614788
2017	24964987631.631374
2018	24052459996.78587
2019	19447114912.539368
2020	11861782229.480482
2021	12915804076.66506
2022	21202792627.357605
2023	22550933895.627678