(1)

1. (a) Each member of the system shall contribute a percentage of each installment of compensation, as provided in item (b) of this subsection. These contributions must be made through payroll deductions and remitted within thirty days after the close of each month to the system.

2. (b) Percentage of Compensation Beginning

   8 percent July 1, 2004

   9 percent July 1, 2005

   10 percent July 1, 2006.