<prompt> Translate the following text to EnglishKwa mfano, nambari ya kwanza katika safu ya 11 inaonyesha kwamba kati ya mwaka wa 1993 na 1997, kiasi cha barua za kibinafsi kilipungua kwa asilimia 2 kila mwaka.  <response>: For example, the first number in Column 11 shows that, between 1993 and 1997, personal mail volume declined by 2.0 percent annually. 