Year	years
2003	3.3
2004	3.3
2005	3.3
2006	3.3
2007	3.3
2008	3.3
2009	3.3
2010	2
2011	2
2012	2
2013	2
2014	2
2015	2
2016	2
2017	2
2018	2
2019	2