Year	constant 2010 US$
1990	7611625799.25476
1991	7179807052.76098
1992	6579006001.5314
1993	6118690731.52574
1994	6052063255.54589
1995	6009349372.60922
1996	6064417751.77287
1997	6135314747.88667
1998	6341031584.38966
1999	6584495964.3666
2000	6888898630.41357
2001	6751364870.81093
2002	6825071654.97291
2003	6971673857.28257
2004	7340509742.37671
2005	7599794814.32425
2006	8099766622.13328
2007	8254695015.83831
2008	9025115612.2718
2009	9036085997.68385
2010	9276084673.89761
2011	9460185849.24651
2012	9378314441.10724
2013	9630062142.7928
2014	10027151913.5697
2015	10269004697.3888
2016	10454171296.597
2017	10475622274.3276
2018	10733360552.6844