<prompt> Translate the following text to SwahiliHousehold mail is defined as the sum of mail in the above three sectors and is shown as Subtotal in Table 1. Its annual growth rate fell from 6.6 percent in 1987-90 to 0.7 in 1990-93 and further to negative 1.4 percent in 1993-97.  <response>: Ujumbe wa barua za nyumbani ni jumla ya barua katika sekta tatu zilizotajwa hapo juu na inaonyeshwa kama jumla ndogo katika Jedwali la 1. kiwango cha ukuaji wa kila mwaka kilipungua kutoka asilimia 6.6 katika 1987 hadi 0.7 katika 1990 na zaidi ya asilimia -1.4 katika 1993-97. 