Year	1=low to 6=high
2005	3.7533333333333334
2006	3.779220779220779
2007	3.7905405405405403
2008	3.804054054054054
2009	3.861842105263158
2010	3.835526315789474
2011	3.811688311688312
2012	3.810126582278481
2013	3.84375
2014	3.82
2015	3.78
2016	3.7847222222222223
2017	3.767123287671233
2018	3.7847222222222223
2019	3.75
2020	3.736111111111111
2021	3.7464788732394365
2022	3.732876712328767
2023	3.732876712328767