50%? Actually I'd say more than that.

"Another sign that factions that prefer violence over dialogue are getting more isolated; this time the radical 'association of Muslim scholars' is being renounced by no less than their former allies in the Islamic Party.

This report from Radio Sawa quotes Omar al-Jubori the head of the human rights office in the Iraqi Islamic Party as saying that Harith al-Dhari, secretary of the association of Muslim scholars was "responsible for 50% of the blood of Sunni Iraqis who were killed in Iraq"."
ITM