Year	1=low to 6=high
2005	3
2006	3
2007	3.5
2008	3.5
2009	3
2010	2.5
2011	2.5
2012	2
2013	2
2014	2
2015	2.5
2016	3
2017	3
2018	3
2019	2.5
2020	2.5
2021	2.5
2022	2.5
2023	2.5