| year | Passenger kilometres | GDP | Decoupling | Intensity |
|---|---|---|---|---|
| 2000 | 1 | 1 | 1 | |
| 2001 | 1.02 | 1.02 | 1.0 | |
| 2002 | 1.03 | 1.03 | 0.99 | |
| 2003 | 1.03 | 1.05 | 0.99 | |
| 2004 | 1.05 | 1.08 | 0.97 | |
| 2005 | 1.04 | 1.1 | 0.94 | |
| 2006 | 1.05 | 1.14 | 0.92 | |
| 2007 | 1.06 | 1.18 | 0.9 | |
| 2008 | 1.07 | 1.19 | 0.9 | |
| 2009 | 1.08 | 1.14 | 0.95 | |
| 2010 | 1.07 | 1.16 | 0.92 | |
| 2011 | 1.06 | 1.19 | 0.9 | |
| 2012 | 1.05 | 1.19 | 0.88 | |
| 2013 | 1.06 | 1.19 | 0.88 | |
| 2014 | 1.07 | 1.22 | 0.88 | |
| 2015 | 1.09 | 1.25 | 0.87 | |
| 2016 | 1.12 | 1.27 | 0.88 | |
| 2017 | 1.12 | 1.31 | 0.86 |