Year	%
1995	8.06
1997	6.58
1998	6.04
1999	5.15
2000	5.14
2001	5.88
2002	5.73
2003	6.34
2004	6
2005	5.97
2006	5.44
2007	5.47
2008	5.26
2009	5.45
2010	5.31
2011	5.11
2012	5.16
2013	5.24
2014	4.29
2015	4.28
2020	4.31
2021	4.28