Year	current international $
2000	1.0136300590139
2001	4.01771730435082
2002	6.63028673204905
2003	8.7206092108758
2004	12.6126231808595
2005	16.4834821830454
2006	18.383905976299
2007	18.5152031379099
2008	22.2105743840297
2009	31.6589622393111
2010	36.1742148415105
2011	34.4645081115718
2012	32.2059395212768
2013	39.4026661171443
2014	39.29851990541
2015	47.7783655033363
2016	58.9090463919268
2017	62.622975236868
2018	66.7449646419622
2019	65.4050396455847
2020	51.6722249584285
2021	70.1670276904437