Year	1=low to 6=high
2005	2.9365079365079363
2006	2.9153846153846152
2007	2.9384615384615387
2008	2.9384615384615387
2009	2.9477611940298507
2010	2.970149253731343
2011	2.9420289855072466
2012	2.9014084507042255
2013	2.8819444444444446
2014	2.9375
2015	2.8819444444444446
2016	2.880281690140845
2017	2.8472222222222223
2018	2.8732394366197185
2019	2.856164383561644
2020	2.8424657534246576
2021	2.8402777777777777
2022	2.8445945945945947
2023	2.824324324324324