Year	constant 2015 US$
1994	11322.901536902473
1995	10555.095752043568
1996	11241.540372635196
1997	12037.987876716752
1998	12126.834076244126
1999	11873.974845741212
2000	12453.49119048129
2001	13374.932800146345
2002	14503.468261179285
2003	14331.208706382757
2004	16190.10842764617
2005	15812.526676967631
2006	16180.255712891323
2007	16772.62994204015
2008	18540.128525272532
2009	19115.323499772167
2010	18704.021836816883
2011	20128.098840935316
2012	19824.387851843112
2013	21052.892580141415
2014	22225.579557890815
2015	27785.679220284695
2016	22728.87885987272
2017	24246.84566409061
2018	24394.303279475367
2019	24893.68273354495
2020	24989.56247517553
2021	26054.11012997723
2022	26546.604890111783