Year	current international $
2000	0.580666041459926
2001	0.753950914248398
2002	1.41305233444665
2003	2.08727632921662
2004	2.85832444116376
2005	1.4591781215868
2006	0.771354950462154
2007	3.71117289812835
2008	2.45519070098875
2009	5.78586723500573
2010	1.71630460549781
2011	2.58181166882562
2012	3.72114461723028
2013	1.27904640117431
2014	3.99708604704807
2015	4.32966783984887
2016	1.23699854717885
2017	1.16677996904658
2018	0.75155691773062
2019	3.19607207704948
2020	9.65287137712422
2021	18.6860503658412