<prompt> Translate the following text to SwahiliThe actual annual requirement for labor would be less if the estimated number of retrofit installations were evenly distributed over the full five-year increment of time instead of the conservative three-year increment.  <response>: Mahitaji ya kila mwaka ya kazi ingekuwa chini kama idadi ya makadirio ya mitambo ya retrofit ilikuwa evenly kusambazwa juu ya kamili ya miaka mitano kuongeza ya muda badala ya kihafidhina miaka mitatu kuongeza. 