Subject to sub. (3d), the percentage determined by dividing the sum of direct premiums written for insurance other than life insurance, with respect to all property and risks resident, located, or to be performed in this state, and assumed premiums written for reinsurance, other than life insurance, with respect to all property and risks resident, located, or to be performed in this state, by the sum of direct premiums written for insurance on all property and risks, other than life insurance, wherever located, and assumed premiums written for reinsurance on all property and risks, other than life insurance, wherever located. In this paragraph, “direct premiums” means direct premiums as reported for the taxable year on an annual statement that is filed by the insurer with the commissioner of insurance under s. 601.42 (1g) (a). In this paragraph, “assumed premiums” means assumed reinsurance premiums from domestic insurance companies as reported for the taxable year on an annual statement that is filed with the commissioner of insurance under s. 601.42 (1g) (a).