Year	1=low to 6=high
2005	3.75
2006	3.75
2007	3.625
2008	3.625
2009	3.625
2010	3.6875
2011	3.625
2012	3.5
2013	3.3125
2014	3.3125
2015	3.4375
2016	3.4285714285714284
2017	3.4285714285714284
2018	3.357142857142857
2019	3.4285714285714284
2020	3.4285714285714284
2021	3.357142857142857
2022	3.2857142857142856
2023	3.2142857142857144