In the US. out of some 480,000 scientists with first-hand knowledge of the current state of research on Evolutionary Biology, only an estimated 700 reject evolution in favor of Intelligent Design (ID).
The numbers
(By the way, this site is an outstanding source for counterarguments against almost any anti-evolution or pro-creationist statement you might run into.)
What the general public fails to understand is that among relevant scientists, Evolution is about as close to being unanimously supported as any theory in all of science. Yet we have a President who proclaims that "there's controversy in the scientific community" concerning Evolution.
I particulary like this quotation from the same site, countering the claim that scientists are pressured into following pro-Evolution dogma:
"The pressures that science imposes do not weaken the validity of evolution -- quite the contrary. Scientists are rewarded more for finding new things, not for supporting established principles. Thus, they tend to look more for novelties and for results that would overturn common beliefs. If a scientist found evidence that falsified evolution, he or she would be guaranteed world prestige and fame."