Year	1=low to 6=high
2005	2.880952380952381
2006	2.853846153846154
2007	2.853846153846154
2008	2.8461538461538463
2009	2.8507462686567164
2010	2.8208955223880596
2011	2.8840579710144927
2012	2.859154929577465
2013	2.8680555555555554
2014	2.888888888888889
2015	2.875
2016	2.852112676056338
2017	2.8194444444444446
2018	2.8450704225352115
2019	2.8493150684931505
2020	2.856164383561644
2021	2.8680555555555554
2022	2.8513513513513513
2023	2.8175675675675675