Year	constant 2010 US$
1997	5014.10708946044
1998	5275.88095618749
1999	4793.04973048406
2000	4950.21941568221
2001	4984.56757219122
2002	5059.15516196483
2003	5164.10298129764
2004	5383.12067928857
2005	5599.87751698489
2006	6072.03429704731
2007	6476.59486462203
2008	6932.0720312393
2009	6516.35751827659
2010	6682.28115774575
2011	6890.77329636906
2012	6697.4464738592
2013	6928.37441217869
2014	7045.11595250809
2015	7279.88908976392
2016	7492.86343603151
2017	7845.37922405331
2018	8226.5988444493