The tax imposed under this subchapter on each domestic insurer on or measured by its entire net income attributable to lines of insurance in this state may not exceed 2 percent of the gross premiums, as defined in s. 76.62, received during the taxable year by the insurer on all policies on those lines of insurance if the subject of that insurance was resident, located or to be performed in this state plus 7.9 percent of the income that is realized from the sale of or purchase and subsequent sale or redemption of lottery prizes if the winning tickets were originally bought in this state.