Year	1=low to 6=high
2005	2.9130434782608696
2006	2.88
2007	2.9
2008	2.88
2009	2.8846153846153846
2010	3.019230769230769
2011	3.0714285714285716
2012	3.1166666666666667
2013	3.1451612903225805
2014	3.225806451612903
2015	3.225806451612903
2016	3.225806451612903
2017	3.15625
2018	3.225806451612903
2019	3.171875
2020	3.15625
2021	3.1129032258064515
2022	3.09375
2023	3.046875