Year	Percent
1999	2.06
2000	2.17
2001	1.66
2002	1.77
2003	1.31
2004	1.41
2005	1.27
2007	1.2
2008	1.95
2009	1.7
2010	0.99
2011	1.09
2012	1.25
2013	2.24
2014	1.28
2015	1.22
2016	2.25
2017	3.64
2018	3.28
2019	2.37
2020	7.31