Year	current international $
2000	8.24380787356834
2001	5.68861992838231
2002	7.25617429920416
2003	7.91043673336567
2004	7.20581148165284
2005	16.1076234723807
2006	9.84274439109039
2007	12.7111821093859
2008	7.98020565112146
2009	7.87271584767067
2010	3.97570145377171
2011	4.13548603356664
2012	1.70710751445809
2013	1.51508313058913
2014	3.7265925438165
2015	3.07934282343462
2016	2.93867110189727
2017	2.44876117133718
2018	4.8976498518587
2019	2.37334921612487
2020	54.1837041541087
2021	16.4097045307454