The 2011 edition of the Scott Standard Postage Stamp Catalogue Volume 2 includes countries of the world C-F.
Value activity was robust with more than 30,000 changes. Leading the way was the People's Republic of China with more 7,000 changes. Other countries showing a high number of value changes are Colombia (3,101), French Offices Abroad (2,263), Canada (2,120), Chile (1,496) and Ethiopia (1,003).
In the People’s Republic of China, early issues show generally modest increases in value. The startling increases appear in the late 1950s and early 1960s and the Cultural Revolution era.