Year	constant 2010 US$
1994	700.745597451062
1995	870.260316470032
1996	1672.65387866651
1997	2264.93271794209
1998	2619.47720085632
1999	2864.03146280679
2000	3015.25262449236
2001	3144.28922804819
2002	3307.52380723641
2003	3437.27747005943
2004	3644.99220217577
2005	3963.06935422939
2006	4177.65632487854
2007	4425.38289682977
2008	4676.11815348177
2009	4557.96351908517
2010	4635.51777931783
2011	4736.59374702643
2012	4770.9104099763
2013	4969.04191858468
2014	5113.41589071679
2015	5352.40178524424
2016	5591.02796169517
2017	5827.69022487883
2018	6056.24494529845