Year	%
1995	9.63
1996	8.29
1997	7.66
1998	5.24
1999	6.56
2000	6.9
2001	7
2002	5.56
2003	6.82
2004	5.82
2005	6.18
2006	4.97
2007	4.86
2008	3.7
2009	3.62
2010	4.66
2011	4.83
2012	4.01
2013	4.2
2014	3.93
2015	3.74
2017	3.56
2018	3.31
2019	3.21
2020	3.26
2021	3.12