Year	constant 2010 US$
1991	393492.323273278
1992	329391.730024417
1993	305325.525560489
1994	326721.544418841
1995	268055.636014817
1996	207870.548855326
1997	190661.958516845
1998	205660.532566121
1999	217220.603956522
2000	234456.150515858
2001	195409.819165045
2002	165210.300245469
2003	115341.14637028
2004	103788.633940046
2005	139692.468182146
2006	163499.744248955
2007	163342.169433928
2008	148456.139682669
2009	105337.036769755
2010	140648.68465212
2011	268185.510437969
2012	238632.02816557
2013	262206.83433352
2014	304184.96470898
2015	676195.103039946
2016	1333684.65436737
2017	2875070.44495191
2018	2516203.44128047