Sec. 10.01. MUNICIPAL AND MEMBER CONTRIBUTIONS. (a) Each municipality in which a fire department to which this Act applies is located shall appropriate and contribute to the fund an amount equal to a percentage of the compensation of all members during that month as follows:

(1) 19.05 percent, beginning on the first pay date following September 30, 2010, through the pay date immediately preceding September 30, 2011;

(2) 20.05 percent, beginning on the first pay date following September 30, 2011, through the pay date immediately preceding September 30, 2012;

(3) 21.05 percent, for 24 pay dates of the municipality beginning on the first pay date following September 30, 2012; and

(4) 22.05 percent, for all pay dates of the municipality that follow the 24 pay dates referenced in Subdivision (3) of this subsection.

(b) Each firefighter shall pay into the fund each month a percentage of the firefighter's compensation for that month as follows:

(1) 15.70 percent, for the pay dates of the municipality following September 30, 2010, through the pay date immediately preceding September 30, 2011;

(2) 16.20 percent, beginning on the first pay date of the municipality following September 30, 2011, through the pay date immediately preceding September 30, 2012;

(3) 16.70 percent, beginning on the first pay date of the municipality following September 30, 2012, through the pay date immediately preceding September 30, 2013;

(4) 17.20 percent, beginning on the first pay date of the municipality following September 30, 2013, through the pay date immediately preceding September 30, 2014;

(5) 17.70 percent, beginning on the first pay date of the municipality following September 30, 2014, through the pay date immediately preceding September 30, 2015;

(6) 18.20 percent, beginning on the first pay date of the municipality following September 30, 2015, through the pay date immediately preceding September 30, 2016; and

(7) 18.70 percent, for the first pay date of the municipality following September 30, 2016, and all subsequent pay dates of the municipality.

(c) The governing body of each municipality may authorize the municipality to contribute a portion of the contribution required of each firefighter under this section. In that event:

(1) the municipality shall appropriate and contribute to the fund each month at the higher percentage of compensation necessary to make all contributions required and authorized to be made by the municipality under this section; and

(2) each firefighter's individual account with the fund shall be credited each month as if the firefighter had made the entire contribution required of that firefighter under Section 10.01(b).

(d) The governing body of each municipality may authorize the municipality to make an additional contribution to the fund in whatever amount the governing body may determine. The members of the fund, by a majority vote in favor of an increase in contributions above 13.70 percent, may increase each firefighter's contribution above 13.70 percent to any percentage recommended by a majority vote of the board of trustees.