Subtract from the 35000 figure natural demographic mortality rate of 4000 from a population of 2.3m and the 10450 the UN now says can't be identified and come from "media reports " after Hamas took the counting away from the Gaza "Health" Ministry. Take 14000 combat deaths from the remaining 20500 and you're left with 6500 civilians killed in 8 months of urban warfare, often subterranean.