2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | |
Predictive value | 6.91 | 7.89 | 10.96 | 11.95 | 13.50 | 14.20 | 15.61 |
The true value | 6.85 | 8.31 | 10.39 | 11.73 | 12.91 | ||
Error rate | 0.86% | 5.05% | 5.49% | 1.88% | 4.57% |