Year	%
1995	9.13
1996	6.79
1997	8.74
1998	7.52
1999	7.4
2000	7.58
2001	7.36
2002	6.29
2003	6.27
2004	5.35
2005	6.34
2006	6.17
2007	5.19
2008	4.57
2009	6.14
2010	6.12
2011	6.07
2012	5.92
2013	5.92
2015	4.12
2018	3.76
2020	3.67
2021	3.12