Year	current US$
1970	469589999.37586486
1971	510280000.6866454
1972	511570000.18656236
1973	649800000.851974
1974	853249998.6160548
1975	1053840004.5670569
1976	967749999.4877722
1977	1039939998.0753663
1978	1393229997.0798197
1979	1811359994.273632
1980	1836460000.939667
1981	1846189992.953092
1982	1806469991.9503183
1983	1726909997.9698656
1984	2054739989.2825627
1985	2056279999.455437
1986	2729329992.8028135
1987	2990890004.3983026
1988	3706209998.5741086
1989	4470769989.19621
1990	4835199988.232925
1991	4790500001.110136
1992	5057949963.329359
1993	4833479983.290658
1994	5155049989.355728
1995	4774939973.285421
1996	4680929986.257107
1997	3570379991.795868
1998	3669580008.195713
1999	3396639997.024089
2000	3005540000.8149443
2001	3168110005.591065
2002	4392529994.165525
2003	4715090011.792255
2004	6018089992.983268
2005	11955149887.217216
2006	17188469984.900208
2007	8828070018.626749
2008	8335130025.712776
2009	9403110073.855146
2010	9833060016.613455
2011	8981330030.003561
2012	10095890017.131342
2013	8934369952.013718
2014	9148330010.602253
2015	8445529997.531325
2016	8393230001.021176
2017	9274710076.63012
2018	10215570052.260534
2019	9590319969.357922