Year	current international $
2000	89.5862848968412
2001	82.9591806842691
2002	86.8024871376068
2003	83.7362846541174
2004	72.7797465010592
2005	68.24173315975
2006	63.6734084614013
2007	107.683361111277
2008	99.0829034122648
2009	55.3037475823709
2010	39.6372471502618
2011	37.6072812264493
2012	36.073229965466
2013	75.258465183195
2014	67.0378748529944
2015	57.5784054653182
2016	49.9258955577846
2017	93.3997166795046
2018	78.9769618969344
2019	92.2486326313347
2020	50.0637587372912
2021	58.6988212028293