Provincial statistics from are classed under HA4637 (e- versions available from 1989-)
Major City Statistics of China are classed under HA4638 (e- versions available from 1989-)
Or, you can also do a title search : 统计年鉴
Statistical Databases - HKUST Library Subscribed
After you sign-in you can search and download data for later manipulation.
For more sources of statistical data, go the Library's guide to Statistical Information.