In the regular municipal election in 1999, the three candidates for Commissioner who receive the highest number of votes shall be elected for four-year terms, while the two candidates who receive the next highest number of votes shall be elected for two-year terms. In the regular municipal election in 2001, and quadrennially thereafter, two Commissioners shall be elected to four-year terms in those positions whose terms are then expiring. In the regular municipal election in 2003, and quadrennially thereafter, three Commissioners shall be elected to four-year terms in those positions whose terms are then expiring.