<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.kwamujibu wa umoja wa mataifa un idadi ya watu imeongezeka mara mbili nchini kenya katika kipindi cha miaka 25 iliyopita.  <response>: according to the united nations un, the number of refugees in the world has doubled over the past 10 years. 