<prompt> Translate the following text to SwahiliIts average annual growth rate fell from 9.9 percent in 1987-90 to negative 1.6 percent in 1990-93 and further to negative  <response>: Kiwango cha wastani cha ukuaji wa kila mwaka kilipungua kutoka asilimia 9.9 mwaka 1987 hadi 1990 hadi asilimia -1.6 mwaka 1993 na kuendelea hadi -1.9 mwaka 1993 na kuendelea hadi mwaka 1993 na kuendelea. 