Year	%
2000	20.45
2001	20.22
2002	19.87
2003	20.68
2004	19.84
2005	21.1
2006	21.24
2008	20.37
2009	20.05
2010	19.71
2011	20.75
2012	6.56
2013	7.1
2014	7.85
2015	11.66
2016	11.86
2017	13.16
2018	12.03
2019	19.03
2020	12.2
2021	11.07