Year	1=low to 6=high
2005	2.760869565217391
2006	2.6
2007	2.66
2008	2.6
2009	2.6346153846153846
2010	2.7115384615384617
2011	2.875
2012	2.9
2013	2.8225806451612905
2014	2.838709677419355
2015	2.903225806451613
2016	2.8225806451612905
2017	2.765625
2018	2.806451612903226
2019	2.828125
2020	2.875
2021	2.8225806451612905
2022	2.828125
2023	2.8125