Year	Percent
2000	16.32
2001	6.95
2002	7.51
2003	6.34
2004	7.88
2005	6.96
2006	6.3
2007	7.18
2008	7.72
2009	4.27
2010	3.25
2011	4.52
2012	3.69
2013	3.77
2014	3.17
2015	4.05
2016	3.02
2017	3.79
2018	2.83
2019	3.9
2020	5.27