<prompt> Translate the following text to EnglishAkiba ya serikali, pia inaitwa ziada, huongeza kwa dimbwi la akiba ya kitaifa inayopatikana kufadhili uwekezaji na inaruhusu serikali kupunguza deni lake la nje au kununua mali zisizo za serikali.  <response>: Government saving, also called a surplus, adds to the pool of national saving available to finance investment and allows a government to reduce its outstanding debt or purchase nongovernment assets. 