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August 7, 1984

1975 Greater New York 19.8 Tokyo-Yokohama 17.7

Mexico city 11.9

Shanghai 11.6

Los Angeles-Long Beach 10.8

Sao Paulo 10.7

London 10.4

Buenos Aires 9.3

Rhein-Ruhr 9.3

Paris 9.2

Rio de Janeiro 8.9

Peking 8.7

1990

Tokyo-Yokohama 23.4

Mexico City 22.9

Greater New York 21.8

Sao Paulo 19.9

Shanghai 17.7

Peking 15.3

Rio de Janeiro 14.7

Los Angeles-Long Beach 13.3

Bombay 12.0

Calcutta 11.9

Seoul 11.8

Buenos Aires 11.4

2000

Mexico City 31.0

Sao paulo 25.8

Tokyo-Yokohama 24.2

Grater New York 22.8

Shanghai 22.7

Peking 19.9

Rio de Janeiro 19.0

Bombay 17.1

Calcutta 16.7

Djakarta 16.6

Seoul 14.2

Los Angeles-Long Beach 14.2