Year	constant 2010 US$
1990	2998.71028632816
1991	2992.26815671461
1992	3024.63656093008
1993	2962.18248427611
1994	2829.67517411852
1995	3082.45923848025
1996	3233.54136585193
1997	3272.42731367986
1998	3165.09882099862
1999	3267.24463357747
2000	3180.29307568603
2001	3338.44102789427
2002	3253.42038592358
2003	3295.23357912523
2004	3472.80901341449
2005	3876.56791827813
2006	3878.16560323256
2007	4054.91945898569
2008	4005.65033993575
2009	3958.84691403184
2010	3956.1237764279
2011	4207.88307768165
2012	4383.07259286567
2013	4699.17765551424
2014	4721.04140681335
2015	4736.76884297819
2016	4784.73652361068
2017	4753.69322990171