Year	Percent
1994	1.7
1998	0.62
1999	4.35
2001	3.06
2002	4.91
2003	2.78
2004	3.35
2005	1.47
2006	1.14
2007	1.92
2008	1.63
2009	2.05
2010	2.19
2011	1.71
2012	1.11
2013	1.8
2014	1.42
2015	2.07
2016	1.89
2017	1.96
2018	3.02
2019	2.95
2020	2.69