Year	1=low to 6=high
2005	3.25
2006	3.1875
2007	3.1875
2008	3.2125
2009	3.231707317073171
2010	3.2560975609756095
2011	3.3048780487804876
2012	3.2674418604651163
2013	3.25
2014	3.2790697674418605
2015	3.313953488372093
2016	3.313953488372093
2017	3.284090909090909
2018	3.2674418604651163
2019	3.1818181818181817
2020	3.1704545454545454
2021	3.13953488372093
2022	3.0681818181818183
2023	3.0681818181818183