Year	current US$
1970	1036916803.477
1971	1272592564.87876
1972	1438491468.55743
1973	1695108665.32656
1974	2173982766.54456
1975	2578949037.30523
1976	3180879927.81837
1977	4212639385.79999
1978	5402696247.33174
1979	6837645288.4783
1980	8681582386.13828
1981	10068735800.1527
1982	11359271895.8528
1983	11618053237.2083
1984	10082378528.5
1985	10598393662.5717
1986	11198577904.8745
1987	8743194359.80349
1988	10669076760.3899
1989	8212486864.95975
1990	8450077456.12334
1991	8810625137.64051
1992	8974156067.76448
1993	9925299986.95251
1994	10348348628.3118
1995	13113653495.524
1996	12167597448.7946
1997	14474615565.7893
1998	17062991338.9909
1999	18262100964.6663
2000	18122346758.0805
2001	20268490131.5776
2002	16240443510.0779
2003	15058995693.4086
2004	15735699571.4278
2005	17012439786.5557
2006	20211015904.2315
2007	26001242491.218
2008	37093345215.5518
2009	54223990905.4273
2010	66164422910.8286
2011	57001232627.5409
2012	74356749846.4673
2013	77115698507.1191
2014	117329743024.637