Year	Percent
1996	4.49
1997	2.25
1998	5.62
1999	5.32
2000	5.26
2001	4.55
2002	6.06
2003	5.52
2004	4.05
2005	4.1
2006	3.07
2007	3.83
2008	2.73
2009	4.39
2010	3.59
2011	2.65
2012	1.69
2013	1.8
2014	1.6
2015	1.56
2016	1.93
2017	2.25
2018	2.06
2019	2.32
2020	2.99