Below are charts of China's postal service and China's telecommunications industry: Length of Mobile Telephone Calls (Local Calls Included). The first chart shows the monthly values. The second chart shows the monthly and accumulated changes. The monthly change is calculated based upon the same month of previous year, and the accumulated changes is based upon the accumulated values of the previous year starting from January to the corresponding month.

The latest available data is January 2012.

Data Source: China Statistical Bureau