Year	constant 2015 US$
2000	13132.44053103283
2001	13071.471994738571
2002	13444.979446722002
2003	13893.939950008402
2004	14592.396868578131
2005	14904.036567757956
2006	15522.03638252759
2007	16202.425614494528
2008	15807.289604773814
2009	15815.146989887724
2010	15953.2908637298
2011	16029.744917444337
2012	17268.55146848171
2013	16815.964793497737
2014	16574.374774240765
2015	17080.499962946084
2016	17779.662969728033
2017	17228.639301254727
2018	17409.171852499876
2019	18130.91345641861
2020	16754.59554962684
2021	17556.86414267622
2022	18825.550424169636