15-4 Length of Transportation Routes
							(10 000 km)
	Length of			Length of	Length of		Length of
Year	Railways in	Electrified	Length of	Navigable Inland	Civil Aviation	International	Petroleum and
	Operation	Railways	Highways	Waterways	Routes	Routes	Gas Pipelines
1952	2.29		12.67	9.50	1.31	0.51
1957	2.67		25.46	14.41	2.64	0.43
1962	3.46	0.01	46.35	16.19	3.53	0.44	0.02
1965	3.64	0.01	51.45	15.77	3.94	0.45	0.04
1970	4.10	0.03	63.67	14.84	4.06	0.44	0.12
1975	4.60	0.07	78.36	13.56	8.42	3.71	0.53
1978	4.86	0.10	89.02	13.60	14.89	5.53	0.83
1979	4.98	0.10	87.58	10.78	16.00	5.13	0.91
1980	4.99	0.17	88.33	10.85	19.53	8.12	0.87
1981	5.02	0.17	89.75	10.87	21.83	8.28	0.97
1982	5.05	0.18	90.70	10.86	23.27	9.99	1.04
1983	5.16	0.23	91.51	10.89	22.91	9.99	1.08
1984	5.17	0.30	92.67	10.93	26.02	10.74	1.10
1985	5.21	0.42	94.24	10.91	27.72	10.60	1.17
1986	5.25	0.44	96.28	10.94	32.43	10.76	1.30
1987	5.26	0.46	98.22	10.98	38.91	14.89	1.38
1988	5.28	0.57	99.96	10.94	37.38	12.83	1.43
1989	5.32	0.64	101.43	10.90	47.19	16.64	1.51
1990	5.34	0.69	102.83	10.92	50.68	16.64	1.59
1991	5.34	0.78	104.11	10.97	55.91	17.74	1.62
1992	5.36	0.84	105.67	10.97	83.66	30.30	1.59
1993	5.38	0.89	108.35	11.02	96.08	27.87	1.64
1994	5.40	0.90	111.78	10.27	104.56	35.19	1.68
1995	5.46	0.97	115.70	11.06	112.90	34.82	1.72
1996	5.67	1.01	118.58	11.08	116.65	38.63	1.93
1997	5.76	1.20	122.64	10.98	142.50	50.44	2.04
1998	5.76	1.30	127.85	11.03	150.58	50.44	2.31
1999	5.79	1.40	135.17	11.65	152.22	52.33	2.49
2000	5.87	1.49	140.27	11.93	150.29	50.84	2.47