Years | Beijing | China | Japan | The United states | The United Kingdom |
2006 | 0.042 | 20.03 | 1.59 | 8.48 | 5.86 |
2007 | 0.039 | 20.05 | 1.76 | 8.74 | 5.9 |
2008 | 0.038 | 20.32 | 1.67 | 8.65 | 4.97 |
2009 | 0.034 | 20.18 | 1.39 | 8.77 | 4.52 |
2010 | 0.036 | 23.48 | 1.40 | 8.41 | 4.86 |
2011 | 0.035 | 25.65 | 1.28 | 8.53 | 4.98 |
2012 | 0.033 | 31.91 | 1.45 | 8.69 | 5.01 |