Type of Model / No. of Countries

   WORLD - ALL (grouped by type of model / number of countries)

   EUROPE (grouped by type of model / number of countries)

   AFRICA (grouped by type of model / number of countries)

   THE MIDDLE EAST (grouped by type of model / number of countries)

   ASIA, AUSTRALIA (grouped by type of model / number of countries)

   NORTH AMERICA (grouped by type of model / number of countries)

   CENTRAL AND SOUTH AMERICA (grouped by type of model / number of countries)