<prompt> Translate the following text to SwahiliIf someone wants to estimate the cumulative volume growth for a period, she has to multiply the annual growth rates in Columns 5, 8, and 11 by the number of years in the period.  <response>: Kwa mfano, ikiwa mtu anataka kukadiria ongezeko la jumla la kiasi kwa kipindi fulani, lazima azidishe viwango vya ukuaji wa kila mwaka katika safu 5, 8, na 11 kwa idadi ya miaka katika kipindi hicho. 