Year	1=low to 6=high
2005	2.7777777777777777
2006	2.77027027027027
2007	2.77027027027027
2008	2.7432432432432434
2009	2.736842105263158
2010	2.723684210526316
2011	2.75
2012	2.6842105263157894
2013	2.6973684210526314
2014	2.6842105263157894
2015	2.710526315789474
2016	2.7567567567567566
2017	2.723684210526316
2018	2.7432432432432434
2019	2.710526315789474
2020	2.710526315789474
2021	2.7162162162162162
2022	2.6052631578947367
2023	2.6052631578947367