Year	constant 2010 US$
1976	8626053037.41091
1977	8971730515.81285
1978	9078169726.85783
1979	8978337699.16807
1980	8691327343.5945
1981	8685608257.54709
1982	8255820330.1337
1983	7966694732.59115
1984	7957716888.89261
1985	7777876384.28473
1986	7514321122.67276
1987	7810815570.3493
1988	8099905596.41723
1989	8433866162.87366
1990	8864001058.75574
1991	9391884584.02753
1992	9659064544.97447
1993	10068955674.9406
1994	10594674451.529
1995	11084998855.0421
1996	11595148430.6316
1997	12208075016.9005
1998	12894269373.0936
1999	12891603159.9784
2000	13176251094.6403
2001	13409884464.7392
2002	13739709526.6258
2003	13940716559.5073
2004	14409459298.2224
2005	15115341016.9565
2006	15896821605.4868
2007	16582502646.4621
2008	17689147275.4832
2009	18179104203.5186
2010	18785524373.1549
2011	19638842922.6497
2012	20346863920.2128
2013	21698063098.9608
2014	23231478795.3526
2015	24891034810.4396
2016	26369324757.6764
2017	27182968538.4411
2018	28442902679.1277