183020011860188019001920194019601980Railway freight traffic (metric ton-km)TelegramsLandline phonesRailway passenger traffic (passenger-km)Mail (units handled)Private carsElectricity output (MWhrs)Commercial carsTextile spindlesAir passenger traffic (passenger-km)Air freight traffic (freight ton-km)Steel (metric tons)Industrial robotsMobile phonesRailway lines (km)