Year	current international $
2000	517.3299951438544
2001	540.1278811764851
2002	587.8826190084641
2003	597.496784278568
2004	630.1548126846546
2005	662.4487569902665
2006	701.9058833591359
2007	753.7614216824566
2008	823.7279447152722
2009	883.2359240782823
2010	879.6105126206564
2011	894.8338428131838
2012	929.8565879584542
2013	977.636783759141
2014	1015.0391195457348
2015	1060.557644175525
2016	1113.6345698041443
2017	1163.9451464321553
2018	1217.929436079083
2019	1318.3523827043853
2020	1418.5116087702324
2021	1530.3550980528814