Year	%
2001	10.62
2002	9.61
2004	9.69
2005	7.27
2006	6.2
2007	5.95
2008	5.26
2009	6.6
2010	4.96
2011	3.44
2012	2.87
2013	9.43
2014	3.39
2015	1.43
2016	3.62
2017	3.18
2018	3.25
2019	2.95
2020	2.36
2021	4.38