<prompt> Translate the following text to EnglishHata hivyo, akiba ya kitaifa zaidi ya kiasi kinachohitajika kuchukua nafasi ya bidhaa za mtaji zilizopunguzwa thamani ni muhimu kwa kuongeza ukubwa wa jumla wa hisa za mtaji na uwezo wa uzalishaji wa taifa wa baadaye.  <response>: Nevertheless, national saving beyond the amount necessary to replace depreciated capital goods is important for increasing the overall size of the capital stock and the nations future productive capacity. 