Year	constant 2010 US$
1991	4366.02207897783
1992	4200.93040596355
1993	4113.66040644418
1994	3995.30577604645
1995	3905.22601502128
1996	3979.62045263349
1997	3799.54884584582
1998	3496.66653429265
1999	3067.25898064854
2000	2996.09283795166
2001	2827.18652760752
2002	2715.95456223045
2003	2547.16260418659
2004	2473.41535101851
2005	2421.8615835719
2006	2406.09610623152
2007	2259.10693521594
2008	2142.4255966751
2009	2057.19777658784
2010	1987.97130779444
2011	1947.73808232645
2012	1987.65589713672
2013	2009.78357407758
2014	1972.73725386938
2015	2244.60750996424
2016	2343.69896137663
2017	2451.99660394897
2018	2235.17970195433
