Year	current international $
2000	0.225282865787186
2001	1.01607998759971
2002	3.20349224725533
2003	9.52174171912363
2004	17.4431863682051
2005	31.7869924855229
2006	47.1047117912717
2007	70.1741117343222
2008	62.1005535828381
2009	66.4497131579878
2010	63.453786559415
2011	51.5305674712046
2012	36.5266134914559
2013	38.6756102790505
2014	25.5647252248624
2015	21.8140144002392
2016	20.5406490991814
2017	21.1299229603046
2018	19.643420587149
2019	17.7353763188698
2020	16.3291728366741
2021	13.4232555985277