Year	%
2000	21.5
2001	21.5
2002	21.67
2003	21.94
2004	21.54
2005	21.95
2006	22.24
2008	21.9
2009	22.02
2010	21.44
2011	23.05
2012	12.5
2013	13.31
2014	14.37
2015	16.14
2016	15.75
2017	15.95
2018	15.05
2019	15.08
2020	15.11
2021	12.56