Year	%
1995	11.06
1996	12.71
1997	11.87
1998	10.52
1999	10.01
2000	8.67
2001	8.43
2002	8.38
2003	8.85
2004	8.4
2005	8.4
2006	8.75
2007	8.57
2008	8.89
2009	7.98
2010	7.97
2011	7.79
2012	8.39
2013	8.38
2014	8.54
2016	8.55
2018	8.42
2019	8.42
2020	8.4
2021	8.42