Year	%
2000	22.26
2001	21.94
2002	22.16
2003	22.08
2004	22.11
2005	22.19
2006	22.25
2008	22.55
2009	22.61
2010	23.05
2011	23.19
2012	12.09
2013	11.93
2014	11.85
2015	13.19
2016	13.02
2017	11.89
2018	12.96
2019	12.97
2020	12.98
2021	10.92