Year	1=low to 6=high
2005	3.95
2006	4
2007	4.1875
2008	4.3125
2009	4.388888888888889
2010	4.333333333333333
2011	4.1875
2012	4.3125
2013	4.3125
2014	4
2015	4
2016	4.1
2017	4.2
2018	4.1
2019	4.2
2020	4.125
2021	4.125
2022	4.125
2023	4.125