Year	1=low to 6=high
2005	2.9810810810810815
2006	2.9702702702702704
2007	2.9702702702702704
2008	2.948648648648649
2009	2.963157894736842
2010	2.96578947368421
2011	2.9815789473684204
2012	2.93076923076923
2013	2.9256410256410263
2014	2.960526315789473
2015	2.9631578947368418
2016	2.968421052631579
2017	2.928205128205128
2018	2.9499999999999997
2019	2.923076923076923
2020	2.912820512820513
2021	2.905128205128205
2022	2.8923076923076927
2023	2.882051282051283