Vermont	Ohio	Michigan	California	Wisconsin
2003	11.7	18.1	23.1	18.4	16.8
2004	11.4	16.4	22.4	18.0	16.9
2005	13.0	17.2	21.4	17.8	17.2
2006	12.9	15.5	20.4	16.9	16.1
2007	12.2	15.4	20.6	17.8	15.4
2008	12.8	15.5	19.6	19.5	16.0
2009	14.1	15.4	19.9	18.3	15.8
2010	13.6	14.7	17.3	18.6	15.1
2011	13.5	14.7	18.3	18.2	14.1
2012	13.1	13.9	17.1	18.4	12.0
2013	13.2	14.1	16.9	17.4	13.1