A member under state general member coverage plan 3 shall contribute seven and forty-two hundredths percent of salary starting with the first full pay period that ends within the calendar month in which state general member coverage plan 3 becomes applicable to the member, except that a member whose annual salary is greater than twenty-five thousand dollars ($25,000) shall contribute :

A. beginning July 1, 2020 and continuing through June 30, 2021, nine and forty-two hundredths percent of salary;

B. beginning July 1, 2021 and continuing through June 30, 2022, nine and ninety- two hundredths percent of salary;

C. beginning July 1, 2022 and continuing through June 30, 2023, ten and forty-two hundredths percent of salary; and

D. beginning July 1, 2023 and thereafter, ten and ninety-two hundredths percent of salary.