<prompt> Translate the following text to SwahiliHowever, when we analyze the per-household volume figures, we have to remember that, for the purpose of developing those figures, we made the aforementioned assumption about the relationship of mail volume and number of households and this assumption may not hold true for some or all sectors or uses and for some or all years in Tables 1, 2 and 3.  <response>: Hata hivyo, wakati sisi kuchambua takwimu kwa kila kaya kiasi, ni lazima kukumbuka kwamba kwa madhumuni ya kuendeleza takwimu hizo, sisi alifanya dhana ya juu kuhusu uhusiano wa kiasi cha barua na idadi ya kaya, na dhana hii inaweza kuwa si kweli kwa baadhi ya sekta au matumizi yote na kwa baadhi ya miaka katika Jedwali 1, 2 na 3. 