Year	1=low to 6=high
2005	3.7333333333333334
2006	3.7333333333333334
2007	3.875
2008	4
2009	3.8461538461538463
2010	3.8461538461538463
2011	3.923076923076923
2012	3.892857142857143
2013	3.9285714285714284
2014	3.909090909090909
2015	3.909090909090909
2016	3.9545454545454546
2017	3.8636363636363638
2018	3.8636363636363638
2019	3.909090909090909
2020	3.85
2021	3.85
2022	3.9
2023	3.95