The bar chart below shows the revenues received, in million US Dollars (USD), from subscribers to a particular Internet service. The data covers the period 2003 to 2008 for the United States (US) and Europe. The bar chart also shows the estimated revenues from subscription to this service for the period 2008 to 2010.
Y axis- Subscription revenue in million US dollars
The difference between the estimated subscription in Europe in 2008 and what it would have been if it were computed using the percentage growth rate of 2007 (over 2004)?