| China | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | Mean |
| Beijing | 18% | 15% | 17% | 23% | 25% | 17% | 22% | 29% | 21% |
| Shanghai |
|
|
|
| 37% | 32% | 36% | 37% | 35% |
| Chengdu |
|
|
|
| 6% | 8% | 8% | 13% | 9% |
| Guangzhou |
|
|
| 14% | 32% | 29% | 33% | 53% | 37% |
| Shenyang |
|
|
|
|
| 27% | 16% | 22% | 21% |