<prompt> Translate the following text to EnglishKwa mujibu wa takwimu za utafiti wa mwaka huu, kiwango cha dhahabu cha kuokoa pesa nchini Marekani ni zaidi ya asilimia 30.  <response>: Estimates based on our long-term growth model suggest that the golden rule saving rate for the United States would be more than 30 percent. 