Year	1=low to 6=high
2005	3.033333333333333
2006	2.890625
2007	2.921875
2008	2.90625
2009	2.878787878787879
2010	2.9393939393939394
2011	3.015151515151515
2012	3.014705882352941
2013	2.9705882352941178
2014	3.0454545454545454
2015	3.0757575757575757
2016	3.015151515151515
2017	3.014705882352941
2018	3.0454545454545454
2019	3.0588235294117645
2020	3.088235294117647
2021	3.090909090909091
2022	3.088235294117647
2023	3.073529411764706