Year	%
1996	23.76
1999	19.08
2000	13.41
2001	12.19
2002	13.63
2003	13.82
2006	12.68
2007	12.59
2008	14.43
2009	15.62
2010	14.06
2011	13.03
2012	12.52
2013	12.52
2014	13.15
2015	13.15
2016	13.15
2017	14.23
2018	14.2
2019	14.25
2020	8.85