Year	constant 2015 US$
1995	12239.579281586117
1996	12582.017210203148
1997	13184.169054426611
1998	14323.63556217612
1999	15017.896879944708
2000	15211.564939418433
2001	14744.667000421705
2002	16248.921404271325
2003	15147.173254586736
2004	15323.622017555683
2005	16792.657722537835
2006	17787.49282695792
2007	14522.798225017257
2008	13832.430520228134
2009	13602.682802520745
2010	13276.9459089406
2011	13876.672756102998
2012	14389.174332644972
2013	16307.72546356909
2014	17179.6857281334
2015	15218.72732649261
2016	14032.549284302624
2017	14508.036421879233
2018	14703.839350025148
2019	12874.726634169054
2020	14128.701061956775
2021	13794.966755685238
2022	14473.807426892332