Year	1=low to 6=high
2005	3.614285714285714
2006	3.6142857142857148
2007	3.585714285714286
2008	3.625
2009	3.5749999999999997
2010	3.5749999999999997
2011	3.5625
2012	3.5625000000000004
2013	3.5625000000000004
2014	3.55
2015	3.5374999999999996
2016	3.485714285714286
2017	3.5
2018	3.5
2019	3.514285714285714
2020	3.5285714285714285
2021	3.4714285714285715
2022	3.457142857142857
2023	3.442857142857143