Year	1=low to 6=high
2005	3.25
2006	3.2777777777777777
2007	3.2777777777777777
2008	3.2777777777777777
2009	3.3333333333333335
2010	3.388888888888889
2011	3.5
2012	3.5
2013	3.5526315789473686
2014	3.6944444444444446
2015	3.6944444444444446
2016	3.638888888888889
2017	3.5526315789473686
2018	3.638888888888889
2019	3.5
2020	3.526315789473684
2021	3.5
2022	3.526315789473684
2023	3.5789473684210527