Year	Tax	obsValue
2002	Environment	6.81
2003	Environment	6.85
2004	Environment	6.82
2005	Environment	6.63
2006	Environment	6.38
2007	Environment	6.17
2008	Environment	6.02
2009	Environment	6.34
2010	Environment	6.37
2011	Environment	6.38
2012	Environment	6.35
2013	Environment	6.33
2014	Environment	6.33
2015	Environment	6.31
2002	Labour	50.8
2003	Labour	50.9
2004	Labour	50.2
2005	Labour	49.6
2006	Labour	48.8
2007	Labour	48.6
2008	Labour	49.9
2009	Labour	52.0
2010	Labour	51.3
2011	Labour	50.9
2012	Labour	51.0
2013	Labour	50.6
2014	Labour	50.3
2015	Labour	49.7