Year	1=low to 6=high
2005	3.75
2006	3.8125
2007	3.75
2008	3.75
2009	3.6875
2010	3.75
2011	3.75
2012	3.8125
2013	3.9375
2014	3.9375
2015	3.9375
2016	4
2017	4
2018	4.071428571428571
2019	4.071428571428571
2020	4.071428571428571
2021	4
2022	4
2023	3.9285714285714284