This is where the Press Release body will begin. . Average Percent Rate Change USPS Proposed PRCRecommended First-Class Mail: Letters 3.5% 1.8% Cards 5.2% 0.4% Priority Mail 15.0% 16.0% Express Mail 3.9% 3.6% Periodicals: Within County 8.6% 6.8% Regular Rate 14.2% 9.9% Nonprofit 15.2%* 7.2% Classroom 11.3%* 9.6% Standard Mail: Regular Other 9.4% 8.8% Regular ECR 4.9% 4.5% Nonprofit Other 6.6%* 4.8% Nonprofit ECR 41.9%* 18.3% Package Services: Parcel Post 2.7% 2.7% Bound Printed Matter 17.5% 17.6% Media Mail 5.0% 6.3% Library Rate 5.0%* 4.9% Special Services: Certified Mail 50.0% 35.7% Money Orders 8.3% (4.1)% Lock Boxes 9.0% 9.0% Systemwide 6.0% 4.6% * Estimated increase had 39 U.S.C. за3626(a) formula not been amended by legislation enacted October 27, 2000.