Year	constant 2010 US$
1995	3963.61851692676
1996	4215.51868910996
1997	4378.82988915997
1998	4539.4936813588
1999	4698.86730171628
2000	4856.8556867342
2001	5076.09342465745
2002	5369.60620896225
2003	5630.99592336928
2004	5971.79752716931
2005	6257.80012017475
2006	6626.94540962224
2007	7115.22948796663
2008	7456.16997085024
2009	7303.41217026536
2010	7343.11733786815
2011	7493.86497935483
2012	7533.93130973702
2013	7561.66839663573
2014	7765.41999028299
2015	8059.64707676605
2016	8433.57868750814
2017	8895.86719457858
2018	9305.13238306321