Year	current US$
1971	280000000
1972	265000000
1973	338000000
1974	419000000
1975	471000000
1976	508000000
1977	498000000
1978	706000000
1979	830000000
1980	1063000000
1981	1095000000
1982	825000000
1983	727000000
1984	840000000
1985	746000000
1986	681000000
1987	770000000
1988	850000000
1989	834000000
1990	610000000
1991	680000000
1992	659000000
1993	799000000
1994	1028000000
1995	1485000000
1996	1561000000
1997	1519000000
1998	1307000000
1999	1355000000
2000	1735000000
2001	2033000000
2002	2389000000
2003	3052000000
2004	3718000000
2005	9641786971.95851
2006	12241860536.371635
2007	13045871679.376047
2008	16317954681.463888
2009	11758602889.788713
2010	10348272832.198109
2011	12038389329.825613
2012	12608107298.381575
2013	18023345654.19669
2014	20597096071.856552
2015	18978701623.910446
2016	20810524663.409817
2017	24570199854.841034
2018	28052299043.836376
2019	30250160352.05545
2020	27140399755.2349
2021	32877675544.077145
2022	38717140516.51919
2023	43698488659.95613