Year	1=low to 6=high
2005	3.2777777777777777
2006	3.2837837837837838
2007	3.2972972972972974
2008	3.2567567567567566
2009	3.276315789473684
2010	3.3552631578947367
2011	3.3947368421052633
2012	3.3684210526315788
2013	3.3684210526315788
2014	3.3552631578947367
2015	3.3421052631578947
2016	3.2972972972972974
2017	3.289473684210526
2018	3.3378378378378377
2019	3.3421052631578947
2020	3.3684210526315788
2021	3.391891891891892
2022	3.4078947368421053
2023	3.3815789473684212