<prompt> Translate the following text to EnglishIdadi ya watu wazee nchini Marekani, yaani watu wenye umri wa miaka 65 na zaidi, inaongezeka na inawakilisha sehemu inayoongezeka ya idadi ya watu wote tazama mchoro 1.6.  <response>: U.S. elderly population-those aged 65 and over-is growing and accounts for an increasing share of the total population see figure 1.6. 