Year	%
1996	22.64
1999	20.3
2000	15.39
2001	12.8
2002	12.8
2003	12.36
2004	12.11
2005	12.18
2006	13.34
2007	14.9
2008	14.62
2009	14.8
2010	11.56
2011	11.56
2012	13.66
2013	16.72
2014	11.43
2015	13.81
2016	13.44
2017	14.54
2018	16.86
2019	14.72
2020	14.72
2021	14.72