Study the graph and answer the questions

Ports worldwide 1965 1970
Port labour productivity, tonnes per hour 1.7 30.0
Average ship size, tonnes 8.4 19.7
Number of loading ports in Europe 11 3
Insurance costs, £ per tonne 0.24 0.04
Value of goods in transit, £ per tonne 2 1
Why has trade increased so much over the period?
Why does trade occasionally drop sharply?
How significant is containerisation?
Find out what the top three exports are in terms of a) goods   b) services.
Find the UK's top three export destinations.