Year	1=low to 6=high
2005	3.576923076923077
2006	3.576923076923077
2007	3.65
2008	3.65
2009	3.7
2010	3.7
2011	3.7222222222222223
2012	3.7222222222222223
2013	3.7222222222222223
2014	3.75
2015	3.75
2016	3.5
2017	3.5
2018	3.5
2019	3.5