Year	constant 2021 US$
1960	7774250013.35144
1961	8780010013.58032
1962	7777590166.09192
1963	6737240000.009541
1964	5938349981.30798
1965	4709469982.59425
1966	4255590050.6973305
1967	3305190001.96457
1968	2964849963.7544203
1969	3161809947.58755
1970	6096890005.11169
1971	5558150014.87732
1972	5532210006.71387
1973	10463819911.6886
1974	15259480083.4656
1975	20371300055.9807
1976	19299620222.0917
1977	20805330297.4701
1978	19100809846.878098
1979	18546119959.8312
1980	19397170083.5228
1981	19212719778.776203
1982	15761330183.0292
1983	12403010235.7864
1984	12059260204.792002
1985	12858190088.2721
1986	9803819890.43951
1987	9717829817.77191
1988	7041020098.68622
1989	7297000020.980841
1990	19202990137.1002
1991	17719320251.4648
1992	10620260108.4709
1993	8598959926.12839
1994	10175569910.0494
1995	7191970110.89325
1996	7844730123.99673
1997	7882730094.90967
1998	8106789944.64874
1999	7703180005.07355
2000	7227470024.108891
2001	7951000064.84985
2002	7257260044.0979
2003	11370819908.142101
2004	13550639724.7314
2005	35018430116.6534
2006	20701079587.9364
2007	20081640363.6932
2008	25303739791.8701
2009	14191360000.610401
2010	13290249768.2571
2011	15856700096.1304
2012	13534659774.7803
2013	25648790191.650402
2014	32188160079.956097
2015	20894389633.1787
2016	28077009567.2607
2017	29375450363.159203
2018	33448909439.0869
2019	29187039772.0337
2020	29563820465.087902
2021	34622419754.0283
2022	30402970489.502