Here’s some interesting maps showing how strong the DCP is by country, state, or province for several regions of interest. The darker green, the higher average DCP score for each club in 2009-10. Click on a map for full size.
US/Canada by state/province (Nevada and Quebec have the best-performing clubs, Wyoming and Vermont the most opportunity for improvement):
Europe (UK and Scotland are the strongest):
Australia by state (Northern Territory may seem strongest, but they only have two clubs!):
Southern Africa by country (District 74):
South Africa by province:
This was done using Microsoft MapPoint 2010, very interesting tool!