according to USPS data. The big picture: Stamp inflation, also known as "stampflation," has been affecting stamp prices over the last couple of years as Americans continue to reduce what they send ...

The big picture: This is the 19th stamp ... in January 2019 when the price of a first-class stamp increased from 50 to 55 cents, according to USPS data. Most increases have been 2 to 3 cents.

The USPS often releases new designs for stamps, such as the fishing-themed images on last week's new set of Forever Stamps, or stamps that commemorate public holidays, or the advent of a new year.