<prompt> Translate the following text to SwahiliIn the 90s, the volume of NHH-to-HH sector has increased, but its annual growth rate has been falling.  <response>: Katika miaka ya 1990, kiasi cha sekta ya NHH-HH kiliongezeka, lakini kiwango chake cha ukuaji wa kila mwaka kimekuwa kikipungua. 