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