The state shall contribute the following percentages of the salary of each member covered by juvenile correctional officer member coverage plan 2 starting with the first pay period that ends within the calendar month in which juvenile correctional officer member coverage plan 2 becomes applicable to the member:
A. beginning July 1, 2020 and continuing through June 30, 2021, twenty-six and eighty-seven hundredths percent of salary;
B. beginning July 1, 2021 and continuing through June 30, 2022, twenty-seven and thirty-seven hundredths percent of salary;
C. beginning July 1, 2022 and continuing through June 30, 2023, twenty-seven and eighty-seven hundredths percent of salary; and
D. beginning July 1, 2023 and thereafter, twenty-eight and thirty-seven hundredths percent of salary.