Year	%
2000	20.45
2001	20.22
2002	19.87
2003	20.68
2004	19.84
2005	21.09
2006	21.23
2008	20.25
2009	19.91
2010	19.71
2011	20.75
2012	6.45
2013	6.96
2014	7.59
2015	11.13
2016	11.16
2017	12.04
2018	11.39
2019	18.39
2020	11.55
2021	10.55