90%, yes. Of course, you have to be willing to do some inference. Some polls say, for instance, that 56% approve when muslims murder infidels, some that 93% agree with beheading them, some that 78% admire OBL most of all, some that 98% approve of this, some that 70% approve of that, yadda, yadda, yadda... These are all estimates that are painting a picture for us of some true, underlying parameter of interest; namely (to my way of thinking anyway), what percentage of muslims tacitly or overtly approve of the murder of innocent people? These data -- taken together with their public prnouncements and reactions, or lack thereof -- when these daily atrocities occur allow us to begin to get a handle on it.
It's plain to see where the average muslim stands: upwards of 90% "understand" why you've gotta kill infidels, and they are not going to condemn it. 'Fer chrissakes, they're throwing infants into pots of boiling water in the Sudan. They've slaughtered a million people there, many of them fellow muslims. It's just pure racist hatred. Have we seen any muslim outrage from so-called "good muslims" over that? No, and we won't.