Year	current US$
1968	6470015016.268864
1969	7286327240.095997
1970	8030340940.445735
1971	9289286902.997576
1972	11146962704.797417
1973	13891358822.57519
1974	19214414857.032124
1975	27263403416.16703
1976	35692405615.43382
1977	40827222227.569466
1978	52324378017.66424
1979	63944017779.32496
1980	75172093478.44463
1981	93053486409.59766
1982	104572442008.38998
1983	107577608883.37807
1984	104579326979.94945
1985	101925371924.27608
1986	105098805935.4283
1987	107774105643.08252
1988	103956658028.75047
1989	107969931376.39957
1990	113681961241.79485
1991	106346547359.29529
1992	105485174760.04178
1993	95752546357.84076
1994	93998225049.06378
1995	94447002683.57365
1996	102028909445.24503
1997	113358538912.5068
1998	115353913308.8576
1999	116915089593.7002
2000	129512736120.81224
2001	133086634374.56055
2002	133837608746.17215
2003	141350575915.4199
2004	164609800059.01053
2005	186638191005.70023
2006	212952860197.0737
2007	242907746127.4617
2008	283019585104.27435
2009	302815741833.50464
2010	335880054220.95264
2011	409608956311.725
2012	444954034474.1631
2013	489235705932.71185
2014	536657322946.94617
2015	516463770593.11725
2016	478345517066.32935
2017	475783106528.6616
2018	515028654760.2136
2019	534417552029.7446
2020	534901429729.84
2021	520146505824.21936
2022	570076215385.4536
2023	607447569149.6564