[For decedents dying after March 22, 1956, and before October 1, 1988, this section shall read as follows:]
A tax equal to the sum of the following percentages of the value of the net estate is hereby imposed upon the transfer of the net estate of every decedent dying after March 22, 1956, and before October 1, 1988, whether a resident or a nonresident of the State of Mississippi:
MISSISSIPPI ESTATE TAX SCHEDULE
Provided, however, that the tax due under this section shall not be less than the state death tax credit allowable under Title 26, Section 2011, USCS.