Year	1=low to 6=high
2005	3.8
2006	3.7
2007	3.7
2008	3.8
2009	4.1
2010	3.7
2011	3.2142857142857144
2012	2.875
2013	2.875
2014	2.875
2015	2.875
2016	2.875
2017	2.9375
2018	2.875
2019	2.875
2020	2.9444444444444446
2021	2.9444444444444446
2022	2.9444444444444446
2023	2.888888888888889