Year	current international $
2000	5.681570491351078
2001	9.780566714325541
2002	12.595944388678989
2003	13.230048193554179
2004	16.14056185399796
2005	17.764524172919046
2006	27.324317873945294
2007	27.668116593718967
2008	28.299041037985695
2009	28.43669089899181
2010	33.09743546411097
2011	39.6245417477322
2012	36.37861077439601
2013	39.734115658350156
2014	41.49078180179701
2015	39.36034305516349
2016	35.45654670617283
2017	29.250235730294555
2018	31.44749911988534
2019	31.772050885301603
2020	36.88907700147603
2021	59.191990695892045