Note: IAB Report US Online Advertising 2007 (vs 2006)
IAB Internet Advertising Bureau reported today: European Online Ad spending in 2007 has grown by 55,2 % (vs. 2006); but as the 2007 include countries not present in 2006, the real growth was 'only' around 40 %. Still above the growth in USA with (only) 25,6 % ...
The second chart shows Ad Spend per User in different countries
The share of online ad spend of all ad spending looks according to IAB like this
and therefore quite different to other stats.