A member under municipal police member coverage plan 1 shall contribute seven percent of salary starting with the first full pay period in the calendar month in which municipal police member coverage plan 1 becomes applicable to the member, except that a member whose annual salary is greater than twenty-five thousand dollars ($25,000) shall contribute:

A. prior to July 1, 2022, eight and one-half percent of salary;

B. beginning July 1, 2022 and continuing through June 30, 2023, nine percent of salary;

C. beginning July 1, 2023 and continuing through June 30, 2024, nine and one-half percent of salary;

D. beginning July 1, 2024 and continuing through June 30, 2025, ten percent of salary; and

E. beginning July 1, 2025 and thereafter, ten and one-half percent of salary.