Year	years
2003	3.3
2004	3.3
2005	3.3
2006	3
2007	1.1
2008	1.1
2009	1.1
2010	1.1
2011	1
2012	1
2013	1
2014	1
2015	1
2016	1
2017	1
2018	1
2019	1