1. In addition to all compensation now provided by law, the sheriff in each county of the third class shall receive the sum of one thousand dollars per year, payable in twelve equal monthly installments out of the county treasury, for the performance of the duties required by sections 43.500 to 43.530.
2. In addition to all compensation now provided by law, the sheriff in each county of the fourth class shall receive the sum of five hundred dollars per year payable in twelve equal monthly installments out of the county treasury, for the performance of the duties required by sections 43.500 to 43.530.