Year	constant 2015 US$
1968	2960431953.410424
1969	3194445390.752846
1970	6212279746.308133
1971	6333747028.805895
1972	6682266413.9468
1973	7238599989.585715
1974	7849068155.214425
1975	7451111809.793584
1976	8200495596.842384
1977	8796199783.382969
1978	9512923859.115614
1979	10407934167.17002
1980	10902527466.622229
1981	11759061950.386366
1982	12741090256.399572
1983	13744369744.433563
1984	15274678546.583069
1985	16781051806.877584
1986	16978128558.038774
1987	16963140882.2978
1988	17576517104.413567
1989	17637809987.294575
1990	18389430740.87188
1991	18470185232.55087
1992	19145301730.85334
1993	19896475091.124947
1994	20926598177.500984
1995	22475026408.531376
1996	25683731197.017345
1997	26843150948.74091
1998	27284951838.120426
1999	28363393401.51215
2000	29748523075.961754
2001	31016212007.664906
2002	32120378686.13442
2003	34611688308.9292
2004	39405954972.818726
2005	42251823790.38136
2006	45928278279.97749
2007	49774742225.73992
2008	54495860084.14736
2009	55589960413.23862
2010	60079999629.25162
2011	66566307775.30148
2012	69369674228.82256
2013	72123380025.41084
2014	79675602722.29282
2015	85919200000
2016	88987870683.80162
2017	91725022928.07898
2018	89264807140.03041
2019	89390524658.93234
2020	81858210964.15407
2021	88952526612.65128
2022	95896294413.7802
2023	92580662625.23174