<prompt> Translate the following text to SwahiliNote that the estimate for the current annual demand is quite conservative since the catalyst replacement rate on oil- and gas-fired combustion units is likely to be less frequent than one-twelfth of the catalyst per year.  <response>: Kwa mujibu wa takwimu za takwimu za mahitaji ya kila mwaka, kiwango cha kubadilisha cha kichocheo cha mafuta na gesi cha moto ni chini ya asilimia 12 ya kichocheo kwa mwaka. 