15-4    Length of Transportation Routes
            (10 000 km)
        Length of Length of   Length of
  Length of   Length of Navigable Civil   Petroleum
Year Railways in National Electrified Highways Inland Aviation International and Gas
  Operation Railways   Waterways Routes Routes Pipelines
               
1978 5.17 0.10 89.02 13.60 14.89 5.53 0.83
1980 5.33 0.17 88.33 10.85 19.53 8.12 0.87
 
1981 5.39 0.17 89.75 10.87 21.83 8.28 0.97
1982 5.29 0.18 90.70 10.86 23.27 9.99 1.04
1983 5.41 0.23 91.51 10.89 22.91 9.99 1.08
1984 5.45 0.30 92.67 10.93 26.02 10.74 1.10
1985 5.50 0.42 94.24 10.91 27.72 10.60 1.17
                                                                                                                     
1986 5.57 0.44 96.28 10.94 32.43 10.76 1.30
1987 5.58 0.46 98.22 10.98 38.91 14.89 1.38
1988 5.61 0.57 99.96 10.94 37.38 12.83 1.43
1989 5.69 0.64 101.43 10.90 47.19 16.64 1.51
1990 5.78 0.69 102.83 10.92 50.68 16.64 1.59
                                                                                                                     
1991 5.78 0.78 104.11 10.97 55.91 17.74 1.62
1992 5.81 0.84 105.67 10.97 83.66 30.30 1.59
1993 5.86 0.89 108.35 11.02 96.08 27.87 1.64
1994 5.90 0.90 111.78 10.27 104.56 35.19 1.68
1995 5.97 0.97 115.70 11.06 112.90 34.82 1.72
                                                                                                                     
1996 6.49 1.01 118.58 11.08 116.65 38.63 1.93
1997 6.60 1.20 122.64 10.98 142.50 50.44 2.04
1998 6.64 1.30 127.85 11.03 150.58 50.44 2.31
1999 6.74 1.40 135.17 11.65 152.22 52.33 2.49
2000 6.87 1.49 140.27 11.93 150.29 50.84 2.47
 
2001 7.01 1.69 169.80 12.15 155.36 51.69 2.76