Year	constant 2010 US$
1991	1746.62508514448
1992	1792.98705304847
1993	1724.21866560711
1994	1653.977783094
1995	1705.05748294941
1996	1714.57090896743
1997	1665.10517202706
1998	1802.29988712801
1999	1409.8654917855
2000	1605.76182796809
2001	1574.35505075992
2002	1521.20173420818
2003	1592.90857133084
2004	1788.36438760235
2005	1772.37328190111
2006	1733.81084691497
2007	1880.09204974769
2008	1819.53769283706
2009	1642.42037776833
2010	1561.74915587466
2011	1728.42505539356
2012	1781.46359229629
2013	1836.71416244307
2014	2177.16009455625
2015	2157.15048326075
2016	2335.35277511561
2017	2132.32301382024
2018	2140.43514113532