Year	Percent
2000	4.91
2001	4.06
2002	4.8
2003	4.91
2004	4.51
2005	4.95
2006	5.14
2007	5.1
2008	4.9
2009	5.3
2010	5.91
2011	5.45
2012	4.96
2013	4.96
2014	4.6
2015	4.31
2016	3.89
2017	3.24
2018	2.91
2019	3.18
2020	3.59