Year	1=low to 6=high
2005	2.888888888888889
2006	2.9444444444444446
2007	2.9722222222222223
2008	2.8055555555555554
2009	2.861111111111111
2010	2.861111111111111
2011	2.888888888888889
2012	2.8684210526315788
2013	2.8684210526315788
2014	2.9444444444444446
2015	2.9166666666666665
2016	2.8055555555555554
2017	2.763157894736842
2018	2.7777777777777777
2019	2.736842105263158
2020	2.6842105263157894
2021	2.6842105263157894
2022	2.6842105263157894
2023	2.736842105263158