Of these only 23 ports handle more than 50 million tons per year and merely 4 ports handle more than 100 million tons per year.
Kwezi zingamashumi amabini amazibuko enqanawa ekwaziyo ukuphatha ngaphezu kwezigidi ezingamashumi amahlanu eetoni ngonyaka, amazibuko enqanawa emane aphatha ngaphezu kweetoni ezilikhulu lezigidi ngonyaka.