Year	constant 2010 US$
1990	5372.38990768842
1991	4734.79327151835
1992	4344.26170044806
1993	4408.89064694399
1994	4592.6906366323
1995	4879.3930866932
1996	5076.81599710487
1997	4840.31466805897
1998	4738.33164565754
1999	4725.62441949487
2000	4871.55319865561
2001	5201.82978572948
2002	5579.57849201576
2003	5676.98566930112
2004	6185.32471794827
2005	6593.04991269433
2006	7127.93011575744
2007	7749.80291182202
2008	8681.84276047761
2009	8363.89785327848
2010	8084.68738295488
2011	8273.15693601884
2012	8478.15943459508
2013	8764.4308531928
2014	9189.47878682859
2015	9470.94642530448
2016	9948.23574945609
2017	10725.7713127004
2018	11232.081060345