<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.wakati akiingia madarakani mwaka 2005, deni la taifa lilikuwa sh trilioni 5.5; lakini miaka 10 baadaye deni hilo amelipaisha hadi kufikia sh trilioni 41.  <response>: when he wrote the book in 1968 the world population was 3.5 billion, four decades later it stood at 6.7 billion. 