Year	current international $
2000	0.58691445529489
2001	3.31307920042972
2002	4.25320245953982
2003	4.78858341182536
2004	3.83356347291451
2005	3.58102591451866
2006	2.57866708514736
2007	3.33951747755514
2008	3.95788334816312
2009	3.08147354960775
2010	3.00524566415154
2011	3.58481439569248
2012	3.47298124758171
2013	3.65455740099889
2014	3.54679175017939
2015	1.31241242702273
2016	3.91007770620733
2017	3.38462621748595
2018	2.91974990830483
2019	3.39031030765785
2020	3.52111475520724
2021	3.64957923180823