Year	constant 2010 US$
1991	7556.44720387348
1992	7165.95797115449
1993	7751.86348252345
1994	6872.23711894559
1995	7149.27224354373
1996	7953.05249175419
1997	6930.56442546844
1998	6641.40999413259
1999	6116.05887247331
2000	6604.48477091318
2001	6663.04155539777
2002	6842.95384985075
2003	7328.16994901766
2004	8255.48458571704
2005	8432.98494956373
2006	8912.09409267691
2007	9308.61862575424
2008	10095.0866016338
2009	10160.6787827016
2010	10459.3598079152
2011	11227.8497692809
2012	12057.2712817411
2013	11673.2809966789
2014	12109.2989342846
2015	11904.4777883782
2016	12352.7639989615
2017	11787.0401558808
2018	11533.0301345231