Year	constant 2010 US$
1995	4094.91097216713
1996	3952.4327822894
1997	3808.24069802313
1998	4339.71879382834
1999	4998.38720667179
2000	4716.50387214969
2001	4838.31465242676
2002	5144.02473837201
2003	4846.65524165607
2004	4693.287460127
2005	5132.15113396106
2006	5080.40019914979
2007	5735.48284089252
2008	5955.43417191652
2009	5798.2352362127
2010	6153.1827695676
2011	6277.35878874377
2012	6532.50916108445
2013	6730.09282353982
2014	7132.98688319468
2015	7275.93330078659
2016	7651.96224745985
2017	7714.09579700995
2018	8008.38527973639