Year	constant 2010 US$
1989	7806697323.06565
1990	7906432636.597
1991	8599753575.35754
1992	9119342134.21343
1993	8865178071.14045
1994	9117733480.01467
1995	10650760982.7649
1996	10283992592.5926
1997	9762795452.87862
1998	8791180931.42648
1999	10018568096.8097
2000	11209716831.6832
2001	11355783498.3498
2002	12011184598.4598
2003	12283080454.7121
2004	12195376604.3271
2005	12041697176.3843
2006	12483637770.4437
2007	11280540960.7627
2008	10579337660.4327
2009	10021624495.7829
2010	9240190685.73524
2011	8962962962.96296
2012	9071507150.71507
2013	8556655665.56656
2014	8629996332.96663
2015	7697836450.3117
2016	7551957902.45691
2017	7347667106.71067
2018	7556843392.82266