Year	current international $
2000	26.2479297598411
2001	22.8638566588499
2002	24.9475918818757
2003	20.0282407750321
2004	10.6196047389797
2005	12.0582404654513
2006	13.725277308215
2007	14.8260955381945
2008	15.9681745514329
2009	16.4673135960836
2010	16.7439289807514
2011	17.2190859025218
2012	16.8785816190631
2013	16.037433594729
2014	15.3472546566971
2015	14.2302297014933
2016	18.6982258758574
2017	17.2394505952637
2018	15.461469040576
2019	13.8626897415851
2020	13.9682048526483
2021	14.8417066037729