Year	current US$
2000	0
2001	0.88950556
2002	2.96812571
2003	4.15674945
2004	12.24352371
2005	3.39981137
2006	3.5100984
2007	2.39896065
2008	1.84531034
2009	1.37349226
2010	10.6537551
2011	35.8207109
2012	10.41283411
2013	18.16142581
2014	2.93782852
2015	2.15700924
2016	28.81375338
2017	4.33234307
2018	3.03593335
2019	0
2020	2.4853839
2021	0