2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | |
HK | 1.35 | 1.42 | 1.45 | 1.35 | 1.39 | 1.54 | 1.44 | 1.51 | 1.47 | 1.43 | - |
Singapore | 1.44 | 1.79 | 1.84 | 1.92 | 2.04 | 2.23 | 2.35 | 2.56 | 2.82 | 2.85 | 2.85 |