Year	1=low to 6=high
2005	3.236842105263158
2006	3.1842105263157894
2007	3.210526315789474
2008	3.210526315789474
2009	3.175
2010	3.175
2011	3.175
2012	3.15
2013	3.175
2014	3.175
2015	3.075
2016	3.075
2017	3.075
2018	3.075
2019	3.1
2020	3.15
2021	3.175
2022	3.225
2023	3.275