<prompt> Translate the following text to EnglishMabadiliko katika akiba ya kitaifa ni jumla ya mabadiliko katika akiba ya kibinafsi na serikali kwa mfano rahisi umakini juu ya kaya moja na aina moja ya IRA.  <response>: Change in national saving represents the sum of the change in personal and government saving for a simplified example focused on one household and one type of IRA. 