Islam again show its uniquness

Courtesy PEW research

82% of countries that require their Head of State to believe in a particular religion are Muslim....
(Pew tries to muddy the waters and make the percentage lower, by including those countries that require a belief in no religion, which seems rather not germane).
I've also included Indonesia as requiring its Head of State to be Muslim, for that is the effect of requiring adherence to monotheism, where Islam is 88% of the populations.