No, we can't.

I'd increase the chance for each trigger, so the chance of getting any one trait is about equal, unless you want the last trait and the first trait to be more common than the others.

For example, the first trait has a 15% chance, but the second has only 15% chance of 85% chance, or 12.75%, and the 3rd trigger is about 11% likely to occur, the way you have it now. You'd actually want the 2nd trigger to have a chance of 17, to get comparable results. The third trigger should have a chance of about 21%, the 4th 27%, the 5th 38%, the 6th 60%, and the last 100%. It won't produce an exactly equal distribution, but it will get you pretty close.