Year	constant 2010 US$
1991	772.764741401858
1992	660.210923110662
1993	746.98705137475
1994	760.311407878454
1995	806.444861825607
1996	809.656704400317
1997	825.269675337019
1998	845.852825852921
1999	863.692938726827
2000	939.682469834503
2001	967.759641370406
2002	1011.13089101286
2003	1114.17326613721
2004	1164.76550189985
2005	1293.14173194519
2006	1365.3561501456
2007	1467.03384751733
2008	1599.55470726023
2009	1708.73525971098
2010	1800.96217203032
2011	1860.30020173495
2012	1931.77418561983
2013	1928.61147191529
2014	2062.73852367233
2015	2182.91521591021
2016	2351.81611900457
2017	2399.4368464002
2018	2485.3320915081