Year	%
1993	9.69
1994	12.39
1995	12.86
1996	11.87
1997	11.87
1998	11.91
1999	13.81
2000	11.92
2001	11.92
2002	11.89
2003	11.74
2004	11.9
2005	11.74
2006	11.74
2007	11.74
2008	11.29
2009	11.21
2010	11.2
2011	10.06
2012	10.07
2014	10.21
2015	13.47
2016	13.92
2017	13.89
2018	13.95
2019	17.32
2020	13.89
2021	12.86