Year FourseamSinkerChangeCurve
2007 12.14 0.00 5.82 -3.51
2008 11.32 1.79 4.85 -2.86
2009 10.49 10.57 4.32 -3.14
2010 9.95 6.30 3.68 -4.03
2011 10.28 5.94 3.05 -5.83
2012 10.06 6.13 3.74 -7.42
2013 9.45 0.00 3.67 -6.01