Telecommunications Facilities (Year-End)
Year								Length of Long Distance Optical Cable Lines (km)		Length of Long Distance Microwave Lines (km)
		Long Distance Telephone Lines (line)		Optical Cable Lines		Digital Lines
1978		18801								13958
1980		22011								13958
1985		37551								17275
1986		44085								18940
1987		53416								20282
1988		68460		2717				493		22320
1989		87139		5670				1851		26338
1990		112437		11453				3334		33626
1991		151779		23613				6490		39282
1992		234276		51352		109300		14388		54418
1993		420323		162861		298045		38666		64368
1994		615809		330359		518915		73290
1995		735545		484231		677672		106882		79634
1996		998287		754143		965263		130159		71503
1997		1146121		935835		1139476		150754		65013
1998		1576483		1351665		1560201		194100		66518
1999		2299447						239735		65228
2000		2201746						286642		121947
2001		3394364						39908		164052