Year	constant 2010 US$
1971	4811935013.1049
1972	5100151989.58142
1973	4687642979.92008
1974	4925257226.02601
1975	5281147057.06536
1976	5707579431.42673
1977	5636351733.40747
1978	5474177028.90406
1979	5901630456.5749
1980	5663098144.10158
1981	6142769261.92574
1982	5986992593.17238
1983	5565797012.11188
1984	6086278383.39574
1985	6730076412.20203
1986	7206856361.86611
1987	7656046146.3743
1988	7263842917.11738
1989	7173205198.64729
1990	7309445639.30323
1991	7540732042.46839
1992	7708316868.74274
1993	7709875740.47112
1994	6832762599.49909
1995	7504018701.91849
1996	7493778252.31701
1997	7988454323.00898
1998	8240991457.11954
1999	9065610514.35342
2000	9495500447.23967
2001	9830909439.83457
2002	10135473367.5831
2003	10873053585.9327
2004	11281980680.5015
2005	11925652971.8471
2006	12105951513.809
2007	12894237365.154
2008	12916606785.4296
2009	13807434729.2489
2010	14385189947.4429
2011	14165412331.1627
2012	14474548958.6657
2013	15343733938.2699
2014	16775871884.4575
2015	17975212783.4594
2016	19283426776.8338
2017	20217349954.9258