175.241  Exemption from tax and execution.--For any municipality, special fire control district, chapter plan, local law municipality, local law special fire control district, or local law plan under this chapter, the pensions, annuities, or other benefits accrued or accruing to any person under any chapter plan or local law plan under the provisions of this chapter and the accumulated contributions and the cash securities in the funds created under this chapter are hereby exempted from any state, county, or municipal tax and shall not be subject to execution or attachment or to any legal process whatsoever, and shall be unassignable.