Year	1=low to 6=high
2005	3.418181818181818
2006	3.4107142857142856
2007	3.4245283018867925
2008	3.4056603773584904
2009	3.4814814814814814
2010	3.5555555555555554
2011	3.5
2012	3.5
2013	3.4649122807017543
2014	3.4423076923076925
2015	3.4326923076923075
2016	3.377551020408163
2017	3.3877551020408165
2018	3.4081632653061225
2019	3.42
2020	3.4375
2021	3.46875
2022	3.479591836734694
2023	3.5