<prompt> Translate the following text to EnglishYaani, viwango vya ufanisi - kodi halisi kulipwa kama uwiano wa mapato - juu ya matajiri ni ya juu kuliko wale juu ya darasa la kati.  <response>: That is, the effective rates--the actual taxes paid as a proportion of income--on the rich are higher than those on the middle class. 