<prompt> Translate the following text to EnglishKwa sababu ya matokeo yao ya mfululizo na matumizi ya jumla kwa idadi ya watu wa Marekani, data ya Six-City na ACS imekuwa muhimu sana katika uchambuzi wa faida.  <response>: Given their consistent results and broad applicability to general US populations, the Six-City and ACS data have been of particular importance in benefits analyses. 