Year	current US$
1974	103647944.712357
1975	154892878.271259
1976	176896352.567737
1977	185871453.925511
1978	193109438.891458
1979	234800232.29531
1980	517660684.764507
1981	620440071.28095
1982	700926464.102277
1983	687898091.163573
1984	672558429.867712
1985	712807075.956514
1986	688514268.67284
1987	481144343.302991
1988	522756827.048114
1989	570351105.331599
1990	718595578.673602
1991	960988296.488947
1992	932379713.914174
1993	906371911.573472
1994	900130039.011703
1995	985175552.6658
1996	1328099982.72952
1997	1555599979.77113
1998	1891099987.70416
1999	1713499988.85891
2000	1758498699.60988
2001	1899089726.91808
2002	1880104031.20936
2003	2573211963.58908
2004	3152301690.50715
2005	3145487646.29389
2006	3899373211.96359
2007	5094431729.51886
2008	5880387516.25488
2009	5483508452.53576
2010	6363089726.91808
2011	7390102210.663203
2012	8435217708.313419
2013	9404931835.109465
2014	9598959831.029621
2015	9865206002.948286
2016	9599156498.628845
2017	10508627294.57527
2018	11607156021.901709
2019	11659870383.986427
2020	8385609204.158541
2021	9074929347.83383
2022	11502229840.698887