Year	%
2001	8.36
2002	6.55
2004	7.24
2005	1.68
2006	3.42
2007	5.64
2008	2.57
2009	2.32
2010	1.67
2011	1.25
2012	1.38
2013	5.58
2014	1.44
2015	1.07
2016	4.15
2017	1.29
2018	1.33
2019	1.41
2020	1.45
2021	1.38