Year	1=low to 6=high
2005	3.5818181818181816
2006	3.563636363636363
2007	3.688888888888889
2008	3.7299999999999995
2009	3.7599999999999993
2010	3.75
2011	3.7333333333333334
2012	3.744444444444445
2013	3.7222222222222223
2014	3.875
2015	3.85
2016	3.8
2017	3.8
2018	3.8499999999999996
2019	3.8499999999999996