Year	1=low to 6=high
2005	3.2777777777777777
2006	3.22972972972973
2007	3.2567567567567566
2008	3.2432432432432434
2009	3.210526315789474
2010	3.223684210526316
2011	3.210526315789474
2012	3.1973684210526314
2013	3.1842105263157894
2014	3.1842105263157894
2015	3.1710526315789473
2016	3.0945945945945947
2017	3.0526315789473686
2018	3.1216216216216215
2019	3.1052631578947367
2020	3.1315789473684212
2021	3.175675675675676
2022	3.1578947368421053
2023	3.1842105263157894