Year	%
1995	7.55
1996	6.22
1997	8.33
1998	6.63
1999	5.98
2000	6.02
2001	5.39
2002	5.64
2003	5.63
2004	3.49
2005	5.37
2006	5.46
2007	3.95
2008	3.22
2009	5.36
2010	5.61
2011	5.21
2012	5.16
2013	5.16
2015	2.82
2018	3.12
2020	3.22
2021	2.68