Year	1=low to 6=high
2005	3.108695652173913
2006	3.04
2007	3.06
2008	2.98
2009	3.076923076923077
2010	3.1346153846153846
2011	3.0892857142857144
2012	3.066666666666667
2013	3.0161290322580645
2014	3
2015	3
2016	2.967741935483871
2017	2.9375
2018	2.9838709677419355
2019	3
2020	3.015625
2021	3.0161290322580645
2022	3.015625
2023	2.96875