Year	1=low to 6=high
2005	2.9027777777777777
2006	2.8513513513513513
2007	2.864864864864865
2008	2.8378378378378377
2009	2.8552631578947367
2010	2.8684210526315788
2011	2.8552631578947367
2012	2.8157894736842106
2013	2.8157894736842106
2014	2.8157894736842106
2015	2.8157894736842106
2016	2.8513513513513513
2017	2.8157894736842106
2018	2.864864864864865
2019	2.8421052631578947
2020	2.8289473684210527
2021	2.824324324324324
2022	2.8157894736842106
2023	2.776315789473684