Year	constant 2010 US$
1992	3390.64820325466
1993	2957.4306719283
1994	2574.70321786769
1995	2519.74840695475
1996	2836.73239604283
1997	2970.51642424462
1998	2976.9674345281
1999	3194.35661666081
2000	3597.00104291491
2001	3601.34940462086
2002	3816.2867224785
2003	4095.77524870467
2004	4625.24018023114
2005	5080.87057043321
2006	5595.88203509936
2007	6258.32428803873
2008	6513.10925748272
2009	5693.14450432022
2010	6202.59984009849
2011	6720.13719831875
2012	6975.5315593019
2013	7184.69172363736
2014	7278.75298323547
2015	7179.82820619992
2016	7149.44921839985
2017	7355.06682007256