Year	Percent
2004	1.57
2007	1.21
2009	1.24
2010	0.64
2011	0.6
2012	0.59
2013	0.78
2014	0.71
2015	1.15
2016	1.13
2017	1.14
2018	0.74
2019	1.47
2020	1.91