Year	constant 2010 US$
1991	3314.08347480066
1992	3428.10354920804
1993	3380.98893034886
1994	3563.29227073579
1995	3710.79912282535
1996	4022.01815376718
1997	4004.47423399895
1998	4222.95670394743
1999	4287.70304318472
2000	4306.85557515365
2001	4436.97295083506
2002	4611.38347073707
2003	4891.5912813806
2004	4687.26692026826
2005	4751.97069585575
2006	5118.84183334122
2007	5469.48712470279
2008	5903.1708933074
2009	5782.45898213287
2010	6403.54420534512
2011	7026.0345467149
2012	8929.7979371467
2013	9781.25888150789
2014	10709.496382203
2015	11233.1383682727
2016	10995.290369091
2017	13219.6185197284
2018	13213.6760181323