Year	1=low to 6=high
2005	3.5
2006	3.5
2007	3.5
2008	3.5
2009	3.3181818181818183
2010	3.3181818181818183
2011	3.4
2012	3.4
2013	3.35
2014	3.1875
2015	3.0625
2016	3
2017	3
2018	3
2019	3
2020	3.3
2021	3.3
2022	3.25
2023	3.3333333333333335