Year	%
1995	10.01
1996	11.15
1997	9.24
1998	7.39
1999	6.67
2000	5.64
2001	5.55
2002	5.83
2003	6.41
2004	5.86
2005	5.85
2006	6.41
2007	5.83
2008	6.38
2009	5.41
2010	5.4
2011	5.35
2012	5.57
2013	5.57
2014	5.62
2016	5.62
2018	5.59
2019	5.59
2020	5.58
2021	5.59