Year	%
1994	13.4
1999	17.42
2001	17.12
2002	17.08
2003	17.76
2004	17.82
2005	17.76
2006	17.76
2007	17.76
2008	14.09
2009	13.37
2010	12.07
2012	11.87
2013	11.94
2014	12.1
2015	12.02
2016	12.54
2017	12.52
2018	12.7
2019	12.7
2020	12.7
2021	12.65