Year	%
1996	21.57
1999	17.87
2000	13.11
2001	12.61
2002	13.68
2003	13.71
2006	12.41
2007	12.32
2008	13.6
2009	15.11
2010	13.02
2011	12.46
2012	12.31
2013	12.31
2014	12.29
2015	12.29
2016	12.3
2017	21.08
2018	21.06
2019	21.09
2020	8.84