Year	1=low to 6=high
2005	2.8833333333333333
2006	2.890625
2007	2.921875
2008	2.890625
2009	2.909090909090909
2010	2.878787878787879
2011	2.878787878787879
2012	2.8529411764705883
2013	2.8529411764705883
2014	2.8636363636363638
2015	2.8181818181818183
2016	2.712121212121212
2017	2.6911764705882355
2018	2.696969696969697
2019	2.6323529411764706
2020	2.588235294117647
2021	2.590909090909091
2022	2.6029411764705883
2023	2.6470588235294117