Since 1980, the volume of goods transported (metric tons times kilometers traveled) has increased by 305% and the volume of passengers (million passengers times kilometers traveled) has increased by 485%.
Sejak tahun 1980, volume barang yang diangkut (ton metrik kali kilometer perjalanan) telah meningkat 305% dan volume penumpang (juta penumpang kali kilometer perjalanan) telah meningkat 485%.