Year	%
1993	7.2
1996	6.37
1997	6.3
1998	6.37
1999	6.4
2000	5.48
2001	6.22
2002	6.04
2003	6.45
2004	5.15
2005	5.01
2006	8.38
2007	8.29
2008	8.15
2009	7.31
2010	7.16
2011	5.13
2012	5.53
2013	4.97
2015	5.38
2016	4.59
2017	4.81
2019	6.51
2020	6.17
2021	6.41