Year	constant 2010 US$
2000	1450.71993260948
2001	1444.30425616439
2002	1382.40399826309
2003	863.069313794998
2004	729.267989851429
2005	743.282201856199
2006	757.036612725646
2007	786.031730689979
2008	835.800359871654
2009	1542.78846218266
2010	1548.27202226783
2011	1577.8357735573
2012	1578.29854572252
2013	1596.91026368012
2014	1532.40083223276
2015	1477.20289326837
2016	1092.26904093763
2017	1049.38893895477
2018	1022.66019605024