Year	constant 2010 US$
1975	3447026942.6176
1976	4284984444.52224
1977	4563934629.39432
1978	5522548853.931
1979	6026209072.4453
1980	7171896856.91754
1981	7509514982.17305
1982	8064094510.05204
1983	8224601866.86887
1984	8935260430.60844
1985	9244097926.36577
1986	9892493563.57272
1987	10178941368.5963
1988	9990416519.13398
1989	8646494231.7805
1990	8730690030.54059
1991	8889928772.05285
1992	10549219358.0342
1993	11037744738.0407
1994	11588135256.1717
1995	12305016974.9286
1996	12561865440.2208
1997	12977398508.6276
1998	13365933816.0372
1999	13821641918.2666
2000	14408404815.1224
2001	15167528418.8364
2002	16044891170.1772
2003	16712527162.6186
2004	18144339150.1808
2005	19622482851.2472
2006	21210595370.4881
2007	22944714050.9371
2008	24604169495.7507
2009	25951636779.8011
2010	26551480959.0973
2011	27238310508.1367
2012	27960444576.1101
2013	28751380350.5268
2014	29641618044.8666
2015	30350555429.2169
2016	30958699718.916
2017	31613703110.79
2018	32227101327.9764