144.039.  Exemption, purchases by state legislator, when. — In addition to the exemptions granted under the provisions of section 144.030, there shall also be specifically exempted from the provisions of sections 66.600 to 66.635, sections 67.500 to 67.545, 67.547, 67.581, 67.582, 67.671 to 67.685, 67.700 to 67.729, 67.730 to 67.739, 67.782, sections 92.400 to 92.420, sections 94.500 to 94.570, 94.600 to 94.655, 94.700 to 94.755, and sections 144.010 to 144.510 and 144.600 to 144.745 and from the computation of the tax levied, assessed or payable under sections 66.600 to 66.635, sections 67.500 to 67.545, 67.547, 67.581, 67.582, 67.671 to 67.685, 67.700 to 67.729, 67.730 to 67.739, 67.782, sections 92.400 to 92.420, sections 94.500 to 94.570, 94.600 to 94.655, 94.700 to 94.755, and sections 144.010 to 144.510 and 144.600 to 144.745, purchases of all tangible personal property made by, or on behalf of, a state senator or state representative if such purchases are made from funds in such state senator's or state representative's state expense account.