Year	constant 2010 US$
1991	35465.4363597499
1992	37390.3848191006
1993	36326.1947778599
1994	37150.2605557873
1995	41635.6780162591
1996	40633.8512479321
1997	40383.1254958411
1998	41228.4238689629
1999	41754.1886841451
2000	42292.4515044866
2001	40938.3770713905
2002	40892.8387150417
2003	40173.7650094647
2004	40997.7533897422
2005	43125.4876885261
2006	42866.7141448127
2007	43535.0095345346
2008	45075.8110180026
2009	44342.0936759969
2010	43771.3148517262
2011	45946.6325306658
2012	46346.4800942731
2013	44906.6529690769
2014	44166.1864974881
2015	43854.6059336603
2016	44900.8607268376
2017	44322.602092478
2018	43797.5279477904