| IN vs. OldP | IN vs. NewP | OldP vs. NewP |
2007 | 0.135NS | 0.419** | 0.326* |
2008 | 0.121NS | 0.416** | 0.344* |
2009 | 0.130NS | 0.400** | 0.342* |
2010 | 0.175NS | 0.386** | 0.292* |
2011 | 0.128NS | 0.318** | 0.240NS |
2012 | 0.140NS | 0.285* | 0.210NS |
2013 | 0.172NS | 0.345** | 0.311* |
2014 | 0.143NS | 0.227* | 0.157NS |