Year	current US$
1967	275494477.5860977
1968	343771972.9938551
1969	339913867.0927846
1970	359772315.10219795
1971	395218628.92069393
1972	486617280.25554913
1973	563683703.3047045
1974	538747339.9560328
1975	830710615.1799542
1976	939228017.2477903
1977	1049838548.109189
1978	1222702572.8469892
1979	1595422955.6443255
1980	1759691186.3999336
1981	1538972424.3663468
1982	1333754224.999486
1983	1297765325.9027262
1984	1232932104.0727642
1985	1392196047.99695
1986	1852163453.1532562
1987	2090629986.9764266
1988	2169040603.193938
1989	2181821909.278918
1990	2681912148.6984205
1991	2724131458.2621584
1992	2830673378.1300616
1993	2818281085.0864587
1994	2081846497.7464817
1995	2706425157.3939652
1996	2780422049.2120423
1997	2697105823.466098
1998	2920358710.5064645
1999	3440724709.5925837
2000	2961484953.8644366
2001	3468337942.320635
2002	3908121307.019565
2003	4714071979.688353
2004	5454249125.729661
2005	6247515888.145334
2006	6905934217.909009
2007	8156468826.126453
2008	9838403100.505545
2009	10231962390.211864
2010	10689168016.261272
2011	12995112690.2596
2012	12442035339.104927
2013	13242690786.093815
2014	14364937124.072668
2015	13104764378.325953
2016	14026048335.704683
2017	15365713048.199303
2018	17070867589.905489
2019	17280250810.032135
2020	17465392764.370636
2021	19309463508.037678
2022	18780322203.7584
2023	20904898296.250145