Year	constant 2010 US$
1991	2089.58266891379
1992	2141.58483450333
1993	2247.07399722333
1994	2254.59854002041
1995	2507.70688131561
1996	2427.64037501362
1997	2554.68038630697
1998	2534.21533283357
1999	2501.04872760171
2000	2267.04406713955
2001	2469.80358005278
2002	2509.07648408306
2003	2850.33712897121
2004	2640.57204155373
2005	2626.55126135538
2006	2944.10592342335
2007	3439.80868400621
2008	4131.21134187476
2009	3170.97975701052
2010	5006.15856018291
2011	5180.09354124892
2012	3347.96053290815
2013	5545.47955737481
2014	6026.92338797929
2015	6556.30159079094
2016	6110.20163710716
2017	6659.59551491019
2018	7039.51416404329