Year	%
1995	10.18
1996	8.53
1997	8.46
1998	7.88
1999	7.61
2000	8.23
2001	7.95
2002	8.31
2003	8.46
2004	8.55
2005	7.73
2006	8.01
2007	7.25
2008	6.98
2009	8.94
2010	8.22
2011	8.04
2012	7.89
2013	8.23
2014	8.12
2015	9.43
2017	12.22
2018	11.93
2019	13.22
2020	14.64
2021	13.33