Here is a list of European Countries with a total population greater than 10million and the percentage of Muslims within that population :
Germany 82.5million 3.6%
France 62.3million 8-9.6% <<- typical France can't even be sure about their own stats!!!
UK 58.8million 2.7%
Italy 58.4million 1.4%
spain 43.1million 2.3%
holland 16.3million 5.8%
Belgium 10.3million 4.0%
http://news.bbc.co.uk/1/hi/world/europe/4385768.stm
So 35% is way way way off the mark - maybe he meant 3.5% of the population as that is a better average!