Type "People's Bank of China" into your favorite search engine and go to the English versions of the web site. Under "Statistics" find the Balance Sheet of the Monetary Authority

Calculate the growth rate of base money and the growth rate of international assets for the last few years. How much foreign exchange intervention is China doing? Are they sterilizing it?

The URL for the English version of the People's Bank of China is http://www.pbc.gov.cn/publish/english/963/index.html where you will find a Tab entitled "The Balance Sheet of the Monetary Authority." The base money supply corresponds to the row entitled Reserve Money, which is the sum of Currency and Deposits of Financial Corporations. During 2010, Reserve Money grew by 29.75% from 142,815.58 to 185,311.08 or by 42,491.50, where the units are 100 million yuan. The line labeled Foreign Assets grew by 14.59% from 188,021.75 to 215,419.60 or by 27,397.85, also in units of 100 million yuan. The fact that Reserve Money grew by more than Foreign Assets indicates that the foreign exchange intervention is likely not sterilized.