<prompt> Translate the following text to SwahiliNot only does government saving directly affect national saving available for private investment, but the federal government also is a key contributor to the nations capital stock and productivity through its own investment spending.  <response>: Si tu kwamba akiba ya serikali huathiri moja kwa moja akiba ya kitaifa inayopatikana kwa uwekezaji wa kibinafsi, lakini serikali ya shirikisho pia ni mchangiaji muhimu kwa hisa ya mtaji wa taifa na uzalishaji kupitia matumizi yake ya uwekezaji. 