<prompt> Translate the following text to EnglishIli kupata hisia ya athari za muda mrefu za njia mbadala za akiba ya kitaifa, tulichunguza mtazamo wa kiuchumi katika miaka 75 ijayo chini ya hali mbili tofauti: 1 Akiba ya jumla ya kitaifa inabaki sawa katika sehemu yake ya 2000 ya Pato la Taifa.  <response>: To get a sense of the long-term implications of alternative national saving paths, we examined the economic outlook over the next 75 years under two different 1 gross national saving remains constant at its 2000 share of GDP-18. 