Year	current US$
1960	13210000
1961	12220000
1962	13190000
1963	12330000
1964	19580000
1965	23280000
1966	27280000
1967	24970000
1968	31430000
1969	30810000
1970	20130000
1971	21774294.5584868
1972	35087159.769738
1973	41655987.1090729
1974	44302323.8239536
1975	96969221.2833453
1976	130830471.823367
1977	179772229.731685
1978	184435721.373649
1979	209170143.613047
1980	149825508.251952
1981	101017896.968617
1982	112228065.15151
1983	113616761.772095
1984	128156833.531163
1985	105800000
1986	111300000
1987	106000000
1988	50000000
1989	21100000
1990	40414226.5723919
1991	104900000
1992	197451250.56719
1993	97151091.43162
1994	171014650.154817
1995	261452436.05142
1996	249191011.054999
1997	580374842.947196
1998	818072806.12209
1999	1257578348.89533
2000	1313039295.43956
2001	1415560687.98416
2002	1524099728.91108
2003	1430030805.79707
2004	1970382833.05793
2005	2327208732.81308
2006	2628480925.68856
2007	2528026292.49309
2008	2473372464.90881
2009	2086482873.29455
2010	2670774350.73571
2011	2749770454.4675
2012	2495238073.99319
2013	2981876533.95856
2014	3431758698.45498
2015	3730883435.74215
2016	3788205637.53589
2017	4679394465.36306
2018	4740702500.99891
2019	5710486083.43693
2020	8096529090.54073
2021	8626200784.47206
2022	8369906372.43532
2023	7497278126.64435