Year	1=low to 6=high
2005	3
2006	3
2007	3
2008	3.25
2009	3.5
2010	3.5
2011	3
2012	2.75
2013	2.75
2014	2.75
2015	2.75
2016	2.75
2017	2.5
2018	2.5
2019	2.5
2020	2.5
2021	2.5
2022	2.5
2023	2.5