Year	Percent
2002	2.69
2003	2.16
2004	1.75
2005	1.87
2006	1.5
2007	1.51
2008	1.95
2009	2.04
2010	1.43
2011	1.66
2012	1.08
2013	1.52
2014	1.3
2015	1.75
2016	2.12
2017	2.34
2018	1.24
2019	1.66
2020	2.82