<prompt> Translate the following text to SwahiliAs we have seen, Tables 1, 2, and 3 show the breakdown of total demand for First-Class Mail by sectors and uses for FYs 1987, 1990, 1993, and 1997.  <response>: Kama tulivyoona, Jedwali 1, 2 na 3 zinaonyesha mgawanyiko wa mahitaji ya jumla ya barua ya darasa la kwanza kwa sekta na matumizi kwa miaka ya kifedha ya 1987, 1990, 1993, na 1997. 