Year	%
2001	4.355717
2002	3.571429
2004	2.034953
2005	3.657363
2006	4.311008
2007	3.288978
2008	4.490291
2009	3.978521
2010	5.225547
2011	3.908935
2012	3.22995
2013	4.455977
2014	0
2015	4.702628
2016	4.927746
2017	0.8738908
2018	0.7598971
2019	0.9916368
2020	0.4500927
2021	0.3703214