| Year | Q(x) | H(y) | C | D | Type | Coupling phase |
| 2008 | 0.4180 | 0.3129 | 0.9896 | 0.6100 | primary coordinated development | benign coupling |
| 2009 | 0.3094 | 0.2082 | 0.9807 | 0.5136 | near-coordinated development | moderate coupling |
| 2010 | 0.3116 | 0.3875 | 0.9941 | 0.5830 | near-coordinated development | moderate coupling |
| 2011 | 0.2864 | 0.3146 | 0.9989 | 0.5453 | near-coordinated development | moderate coupling |
| 2012 | 0.3274 | 0.5504 | 0.9672 | 0.6348 | primary coordinated development | benign coupling |
| 2013 | 0.3280 | 0.4446 | 0.9885 | 0.6085 | primary coordinated development | benign coupling |
| 2014 | 0.3211 | 0.6797 | 0.9336 | 0.6586 | primary coordinated development | benign coupling |
| 2015 | 0.3313 | 0.5484 | 0.9691 | 0.6366 | primary coordinated development | benign coupling |
| 2016 | 0.3695 | 0.7834 | 0.9333 | 0.7067 | moderate coordinated development | benign coupling |
| 2017 | 0.6372 | 0.6754 | 0.9996 | 0.8076 | good coordinated development | high level coupling |