Year	constant 2010 US$
1991	2420.00883588867
1992	3124.27130451789
1993	2925.98581875433
1994	2500.00403910588
1995	1991.42898902454
1996	1963.88748301958
1997	1981.52450823834
1998	1638.46622174612
1999	2018.95719082789
2000	1952.53271032194
2001	2236.74026100577
2002	2271.21070578749
2003	2307.59778988367
2004	2402.56437175293
2005	2603.71042760946
2006	2779.08746245053
2007	2987.19344743878
2008	2828.02521476292
2009	3250.34648994223
2010	2874.10851991535
2011	3833.34306724454
2012	3244.43632020961
2013	3770.55934271414
2014	4171.33553983726
2015	5209.33551827954
2016	6045.8063417652
2017	6666.31231504553
2018	6924.14096166814