Year	constant 2010 US$
2000	8131.57637532779
2001	8324.36952515685
2002	7953.29785700117
2003	7755.00313175594
2004	7382.95646851646
2005	7079.17535161166
2006	6645.17609537668
2007	6444.45255957641
2008	7497.40489863285
2009	7824.48246608549
2010	8534.10349239597
2011	8833.48830841866
2012	8783.58889091062
2013	9541.79669170956
2014	9327.55558616637
2015	9256.57641902895
2016	8951.47011863232
2017	8419.16557210602
2018	8143.67664076416