Year	Percent
2002	1.35
2003	1.53
2004	2.47
2005	2.22
2006	2.07
2007	1.17
2008	0.91
2009	2.51
2010	2.1328
2011	1.8355
2012	1.1866
2013	1.2965
2014	0.5881
2015	1.3579
2016	0.7888
2017	0.919