Year	constant 2010 US$
1990	13327818332.8432
1991	13691972666.4718
1992	15041574162.9786
1993	16001773376.3623
1994	17101235975.346
1995	18422555301.7642
1996	17886736267.5007
1997	18251200160.2172
1998	19010624034.185
1999	19205237056.7472
2000	19573538866.6239
2001	20003745191.0903
2002	20093706480.5194
2003	20516572829.6634
2004	20701085059.6827
2005	21563942056.135
2006	22839581448.5391
2007	24003125526.3981
2008	23837503274.7816
2009	21611206644.5503
2010	22071820000
2011	22966454234.5754
2012	23654321105.7056
2013	24532310648.3994
2014	24113430753.283
2015	25003865108.3598
2016	25450546860.0487
2017	26018825661.0602
2018	26815962246.9775