Year	current US$
1970	211000000
1971	238000000
1972	227000000
1973	225000000
1974	202000000
1975	266000000
1976	255000000
1977	349000000
1978	393000000
1979	417000000
1980	406000000
1981	447000000
1982	507000000
1983	392000000
1984	329000000
1985	313000000
1986	358000000
1987	487000000
1988	379000000
1989	345000000
1990	352000000
1991	1290000000
1992	1390000000
1993	1140000000
1994	1395000000
1995	1120000000
1996	880000000
1997	1060000000
1998	1060000000
1999	790000000
2000	790000000
2001	670000000
2002	1070000000
2003	1750000000
2004	2460000000
2005	169999999.999993
2006	189000000.000008
2007	99004563.3476434
2008	103631887.21223
2009	150336961.494535
2010	196589288.017747
2011	202869816.188342
2012	214841268.635457
2013	209601443.444637
2014	2452442617.07256
2015	1997393458.35396
2016	1989023597.12295
2017	1791887073.28626
2018	1984998399.13173
2019	1785838683.22299
2020	1699608934.62519
2021	1792158957.01478
2022	1658975809.67343
2023	1770000000