Year	constant 2010 US$
1991	1798.60718592416
1992	1846.34606986862
1993	1816.27168931978
1994	1918.23786597352
1995	1717.15766123969
1996	1677.6709788416
1997	1746.73399887208
1998	1746.02134477468
1999	1753.99090353893
2000	1756.67958259776
2001	1847.35903315729
2002	1852.99272956976
2003	1891.894724426
2004	2002.71158360862
2005	2097.74619024153
2006	2242.30246934465
2007	2331.86961783177
2008	2475.09832170234
2009	2598.05434823832
2010	2749.67347808631
2011	2879.80395292915
2012	3016.59940426146
2013	3112.68524725987
2014	3251.22405350468
2015	3385.56067529861
2016	3354.43212038691
2017	3308.84057140297
2018	3286.23330623511