Year	current US$
1975	978000000
1976	969000000
1977	1155000000
1978	1296000000
1979	1377000000
1980	1672000000
1981	2181000000
1982	1739000000
1983	1648000000
1984	1862000000
1985	1993000000
1986	1752000000
1987	1885000000
1988	2198000000
1989	3070000000
1990	3706000000
1991	3268000000
1992	4002000000
1993	3917000000
1994	4817000000
1995	6005000000
1996	4558000000
1997	5669329738.89371
1998	6645052332.35731
1999	5979699249.53963
2000	7858908525.13575
2001	7951951164.97589
2002	7950474479.53689
2003	8701267993.16155
2004	10591392176.8625
2005	13570870788.1191
2006	16213807324.521599
2007	20484453137.1611
2008	26356964880.4058
2009	23712120858.5579
2010	28533757826.710003
2011	34662630538.79
2012	36453057829.09
2013	35962366591.810005
2014	38579289966.86
2015	32886125183.88
2016	32321212635.36
2017	32455637059.329998
2018	33248412347.09
2019	32352877495.030003
2020	26902433013.4
2021	30812675925.28
2022	39558866452.33
2023	44270505816.619995