Year	1=low to 6=high
2005	3.6923076923076925
2006	3.6923076923076925
2007	3.8636363636363638
2008	3.8636363636363638
2009	3.8636363636363638
2010	3.8636363636363638
2011	3.85
2012	3.85
2013	3.85
2014	3.6875
2015	3.625
2016	3.5
2017	3.5
2018	3.5833333333333335
2019	3.642857142857143
2020	3.7
2021	3.6
2022	3.5
2023	3.5833333333333335