Year	%
1993	8.15
1994	11.47
1995	11.05
1996	10.95
1997	10.39
1998	10.7
1999	11.11
2000	9.58
2001	11.16
2002	10.67
2003	9.9
2004	8.95
2005	8.69
2006	6.16
2007	5.9
2008	5.14
2009	4.5
2010	6.11
2011	4.2
2012	4.34
2014	5.09
2015	6.38
2016	6.81
2017	7.03
2018	7.35
2019	8.11
2020	6.21
2021	4.63