<prompt> Translate the following text to SwahiliBecause of difficulties in measuring productivity of farms and nonmarket activities, the most widely used measure of labor productivity growth is the rate of increase in nonfarm business sector output per hour worked.  <response>: Kwa sababu ya ugumu wa kupima uzalishaji wa mashamba na shughuli zisizo za soko, kipimo kinachotumiwa sana cha ukuaji wa uzalishaji wa kazi ni kiwango cha ongezeko la uzalishaji wa sekta ya biashara isiyo ya kilimo kwa saa moja ya kazi. 