Year	constant 2010 US$
1970	6870068959.14272
1971	7816451424.97048
1972	9098332486.31669
1973	9915447170.64084
1974	10768575028.1584
1975	10353730477.9561
1976	9739977748.33479
1977	8603707635.48207
1978	8505823078.05851
1979	7871115318.07269
1980	8321356180.87402
1981	9859913000.43778
1982	10404339346.6831
1983	11451074893.1334
1984	12306817833.1829
1985	13373729426.2474
1986	13172772946.8496
1987	13981660277.3131
1988	13703322703.8261
1989	14403793812.5498
1990	13947490984.8127
1991	11808348934.2399
1992	12113737224.6437
1993	14162472990.6185
1994	16336496234.4829
1995	18110453642.7079
1996	18973229052.9317
1997	20398374600.2951
1998	18672823779.8475
1999	21810706726.0187
2000	20646814069.8648
2001	22346026074.1869
2002	24119983554.4665
2003	27575356455.9995
2004	29834802967.1424
2005	31516218460.4504
2006	30997271893.7686
2007	33410480401.3001
2008	30975204194.1715
2009	27788914660.2229
2010	28816130002.2657
2011	30539545264.4491
2012	32086419073.965
2013	35212912255.9694
2014	38006254457.8074
2015	39492620086.6427
2016	40897833492.6731
2017	42805620755.9538