<prompt> Translate the following text to EnglishHata hivyo, jambo moja ni hakika: idadi ya watu wa Marekani inazidi kuzeeka, na kutakuwa na wafanyakazi wachache wanaomtegemeza kila mstaafu.  <response>: However, one certainty is that the U.S. population is aging and there will be fewer workers supporting each retiree. 