Year	Percent
1990	1.41
1991	0
1992	0
1993	0
1994	0
2004	1.65
2006	2.2
2007	1.73
2008	2.07
2009	2.45
2010	2.07
2011	2.01
2012	2.62
2013	2.03
2014	2.79
2015	2.43
2016	2.46
2017	2.83
2018	2.75
2019	2.34
2020	1.94