Year	%
1999	7.77
2000	7.86
2001	7.78
2002	5.22
2003	5.16
2004	5.16
2005	5.42
2006	5.29
2007	5.24
2008	5.22
2009	5.21
2010	4.96
2011	5.16
2012	5.16
2013	5.4
2014	4.66
2015	4.73
2016	4.73
2017	5.12
2018	5.04
2019	5.04
2020	4.96
2021	4.97