<prompt> Translate the following text to EnglishUtafiti wa hivi karibuni wa kiuchumi ulikadiria kuwa kuongeza akiba kama sehemu ya Pato la Taifa kwa asilimia moja juu ya kiwango cha 1999 ingeongeza Pato la Taifa vya kutosha kufunika asilimia 95 ya ongezeko la gharama za wazee kati ya sasa na 2050.  <response>: Recent economic research estimated that increasing saving as a share of GDP by one percentage point above the 1999 rate would boost GDP enough to cover 95 percent of the increase in elderly costs between now and 2050. 