Year FourseamSinkerChangeCurve
2009 98.94 97.56 90.44 83.48
2010 97.79 96.90 89.91 82.52
2011 96.65 95.48 89.59 79.98
2012 96.65 95.85 89.50 81.25
2013 96.43 95.63 89.21 80.93