Year	%
1996	5.97
2000	5.06
2001	4.91
2003	5.12
2004	5.04
2005	5.04
2006	5.1
2007	4.41
2008	4.52
2009	4.46
2010	4.51
2011	4.46
2012	4.52
2013	8.77
2014	4.61
2015	5.58
2016	5.57
2020	5.31
2021	5.64