Year	constant 2010 US$
1991	8462.91144485018
1992	8331.96248958657
1993	8115.24528340567
1994	8031.6297328784
1995	8096.02324109751
1996	8158.51851325083
1997	8285.44960102896
1998	8261.09728617538
1999	8368.58800647902
2000	8605.04327977279
2001	8705.86397042756
2002	8887.95134017521
2003	9053.03998237455
2004	9257.1955867038
2005	9581.18957822952
2006	9893.21585945582
2007	10466.3850157604
2008	10798.9931887324
2009	10830.5487071265
2010	11156.9756476155
2011	11480.5401353465
2012	11759.3185291139
2013	12003.5650250533
2014	12190.0325309648
2015	12287.3016093048
2016	12516.6273489432
2017	12644.7530011098
2018	13093.7106378458