Year	1=low to 6=high
2005	3.275
2006	3.261904761904762
2007	3.3095238095238093
2008	3.261904761904762
2009	3.2954545454545454
2010	3.3863636363636362
2011	3.4545454545454546
2012	3.3260869565217392
2013	3.3260869565217392
2014	3.260869565217391
2015	3.217391304347826
2016	3.1739130434782608
2017	3.1458333333333335
2018	3.217391304347826
2019	3.25
2020	3.2708333333333335
2021	3.260869565217391
2022	3.25
2023	3.1875