An affiliated public employer shall contribute the following percentages of the salary of each member it employs and who is covered under municipal general member coverage plan 2:
A. prior to July 1, 2022, nine and eight-tenths percent of salary;
B. beginning July 1, 2022 and continuing through June 30, 2023, ten and three-tenths percent of salary;
C. beginning July 1, 2023 and continuing through June 30, 2024, ten and eight-tenths percent of salary;
D. beginning July 1, 2024 and continuing through June 30, 2025, eleven and three-tenths percent of salary; and
E. beginning July 1, 2025 and thereafter, eleven and eight-tenths percent of salary.