Year	%
1993	9.3
1994	9.94
1995	9.37
1996	9.12
1997	9.12
1998	8.86
1999	8.88
2000	8.15
2001	8.61
2002	8.98
2003	8.12
2004	5.57
2005	5.63
2006	4.33
2007	4.28
2008	4.21
2009	4.02
2010	5.58
2011	4.63
2012	4.33
2013	4.33
2014	4.61
2015	5.01
2016	5.01
2017	6.09
2018	4.87
2019	4.87
2020	5.61
2021	5.44