Year	%
1995	7.68
1996	9.14
1997	6.63
1998	4.9
1999	9.05
2000	3.04
2001	4.26
2002	4.31
2003	4.59
2004	5.27
2005	6.72
2006	5.73
2007	5.39
2008	5.58
2009	4.31
2010	4.15
2011	4.39
2012	4.3
2013	3.92
2014	3.86
2015	3.79
2016	3.57
2017	3.48
2018	3.33
2019	3.19
2020	3.26
2021	3.04