Year FourseamSinkerCurveChange
2007 11.80 61.49 17.39 9.32
2008 37.38 38.61 16.70 7.31
2009 72.73 4.55 13.64 9.09
2010 30.88 49.26 12.50 7.35
2011 29.30 50.00 14.65 6.05
2012 25.78 42.22 22.10 9.90
2013 15.05 52.31 26.68 5.96