Which preposition to use with annum

in Occurrences 1%

But though they make the greatest Appearance in the Field, and cry the loudest, the best on't is they are but a sort of French Huguenots, or Dutch Boors, brought over in Herds, but not Naturalized; who have not Lands of two Pounds per Annum in Parnassus, and therefore are not privileged to poll.

with Occurrences 1%

w/rebate: Cost per Annum with Rebate when Profits reach 26 per Cent.

Which preposition to use with  annum