Year	%
1994	11.47
1999	11.44
2000	11.61
2001	11.56
2002	6.47
2003	6.54
2004	6.29
2005	4.44
2006	4.46
2007	4.01
2008	3.73
2009	3.55
2011	4.34
2012	3.86
2013	3.86
2014	3.77
2015	4.74
2017	3.78
2020	4.2