(A) There is hereby established in the state treasury the volunteer fire fighters' dependents fund. All investment earnings earned by the fund shall be collected by the treasurer of state and placed to the credit of the fund. Each political subdivision or fire district which maintains in whole or in part a volunteer fire department or employs volunteer fire fighters shall pay to the treasurer of state, to the credit of the fund, an initial premium as follows:

1. (1) Having an assessed property valuation of less than seven million dollars, a premium of three hundred dollars;
2. (2) Having an assessed property valuation of seven million dollars but less than fourteen million dollars, a premium of three hundred fifty dollars;
3. (3) Having an assessed property valuation of fourteen million dollars but less than twenty-one million dollars, a premium of four hundred dollars;
4. (4) Having an assessed property valuation of twenty-one million dollars but less than twenty-eight million dollars, a premium of four hundred fifty dollars;
5. (5) Having an assessed property valuation of twenty-eight million dollars or over, a premium of five hundred dollars.