Year	1=low to 6=high
2005	2.9375
2006	2.9146341463414633
2007	2.926829268292683
2008	2.9390243902439024
2009	2.9634146341463414
2010	2.9878048780487805
2011	2.9642857142857144
2012	2.9523809523809526
2013	2.9302325581395348
2014	3
2015	2.975609756097561
2016	2.960526315789474
2017	2.9473684210526314
2018	2.9473684210526314
2019	2.9358974358974357
2020	2.8815789473684212
2021	2.8552631578947367
2022	2.8974358974358974
2023	2.8846153846153846