Year FourseamSinkerChangeCurve
2009 99.14 97.77 90.65 83.70
2010 97.88 97.04 90.14 82.69
2011 96.69 95.53 89.61 80.02
2012 96.70 95.90 89.54 81.30
2013 96.39 95.58 89.18 80.90