The decline of transport and communication costs relative to 1930

Sea freight corresponds to average international freight charges per tonne. Passenger air transport corresponds to average airline revenue per passenger mile until2000 spliced to US import air passenger fares afterwards. International calls correspond to cost of a three-minute call from New York to London.

19302005194019501960197019801990Passenger air transport cost (relative to 1930)Sea freight cost (relative to 1930)International calling costs (relative to 1930)