Description of Figure 7: Line chart showing direction of domestic sea freight movements at major Welsh ports and UK ports for the latest 10 years.
Disgrifiad o Ffigur 7: Siart linell sy'n dangos cyfeiriad symudiadau cludo nwyddau môr domestig ym mhorthladdoedd mawr Cymru a phorthladdoedd y DU dros y 10 mlynedd diweddaraf.