<prompt> Translate the following text to SwahiliIt was a take--off on a joint USPS-PRC task force recommendation in the early 90s for a four-year rate cycle with a mid-cycle adjustment.  <response>: Utaratibu huo ulifuatwa na USPS na China katika miaka ya 1990 na kuanzishwa kwa mzunguko wa kiwango cha miaka minne na marekebisho ya katikati ya mzunguko. 