Year	current US$
1965	197501862.12870634
1966	200668814.9029538
1967	211381299.69244266
1968	257710416.89813814
1969	251576564.83709717
1970	284005473.4979364
1971	335928206.688104
1972	390830241.0036976
1973	456280562.5251002
1974	491889089.57926816
1975	729774049.0656419
1976	793051292.8757536
1977	943911998.7156285
1978	1311288738.524229
1979	1671668197.5248368
1980	1810903418.9323242
1981	1878440367.0045514
1982	1911383891.4075687
1983	2013215078.0291529
1984	2266220105.222059
1985	2698093752.94531
1986	2694449197.7243333
1987	2691627935.7717547
1988	1953074690.7034554
1989	1956872129.5241287
1990	2132071772.3512597
1991	1733392181.1181166
1992	2211014452.616158
1993	1580660005.219122
1994	1378107626.0925574
1995	1636645932.847237
1996	2313348982.234333
1997	2354149770.942581
1998	2295271123.982973
1999	2059848164.1850855
2000	2437829405.6016383
2001	2881977218.4210167
2002	3165848307.796964
2003	3322828642.6758723
2004	4008132751.235413
2005	4438925464.43194
2006	4793806221.703598
2007	6278066798.062749
2008	8291276207.554285
2009	6311089296.150744
2010	6841031829.053697
2011	8359880290.558051
2012	7888349860.650095
2013	8781390776.879572
2014	9905295760.84509
2015	7907933406.685736
2016	7333874147.54409
2017	7525797302.970096
2018	8730827316.891872
2019	9333197587.669672
2020	7544311297.144898
2021	9102291771.325365
2022	9599690378.20223
2023	9732938548.26309