Year	current international $
2000	0.149681559725188
2001	0.163572330336688
2002	0.182996500252752
2003	0.206742391059982
2004	0.209256780899624
2005	0.220265665217572
2006	0.245024595824878
2007	0.241433449142195
2008	0.260533163657845
2009	0.259573411286568
2010	0.285347541219455
2011	0.316411450642752
2012	0.345842094689512
2013	0.390438516539883
2014	0.39422549058542
2015	0.444096111477842
2016	0.492073637209844
2017	0.558140229654689
2018	0.551222594959498
2019	0.576044845107561
2020	0.563870707453392
2021	0.636867145905792