| Year | S(x) | G(y) | C | D | Type | Coupling phase |
| 2008 | 0.4080 | 0.0280 | 0.4901 | 0.3542 | mild inharmonious recession | moderate coupling |
| 2009 | 0.3854 | 0.0722 | 0.7291 | 0.4355 | near-inharmonious recession | moderate coupling |
| 2010 | 0.3916 | 0.1637 | 0.9119 | 0.5234 | near-coordinated development | moderate coupling |
| 2011 | 0.3405 | 0.3520 | 0.9999 | 0.5874 | near-coordinated development | moderate coupling |
| 2012 | 0.3171 | 0.4920 | 0.9764 | 0.6147 | primary coordinated development | benign coupling |
| 2013 | 0.3935 | 0.5935 | 0.9793 | 0.6810 | primary coordinated development | benign coupling |
| 2014 | 0.4518 | 0.6686 | 0.9811 | 0.7269 | moderate coordinated development | benign coupling |
| 2015 | 0.2243 | 0.7511 | 0.8416 | 0.6051 | primary coordinated development | benign coupling |
| 2016 | 0.2871 | 0.8281 | 0.8745 | 0.6636 | primary coordinated development | benign coupling |
| 2017 | 0.4047 | 0.9241 | 0.9204 | 0.7508 | moderate coordinated development | benign coupling |