Year	1=low to 6=high
2005	3.210526315789474
2006	3.1875
2007	3.225
2008	3.2375
2009	3.2439024390243905
2010	3.2804878048780486
2011	3.402439024390244
2012	3.4069767441860463
2013	3.4204545454545454
2014	3.4651162790697674
2015	3.4651162790697674
2016	3.453488372093023
2017	3.4204545454545454
2018	3.511627906976744
2019	3.4431818181818183
2020	3.4545454545454546
2021	3.441860465116279
2022	3.4204545454545454
2023	3.409090909090909