Year Number of telephone main lines, thousandsa Outgoing phonecalls, million
1960 243.4 538.2
1961 255.0 558.3
1962 265.7 572.3
1963 276.9 596.1
1964 291.4 606.4
1965 303.8 553.3
1966 319.2 569.8
1967 336.9 596.9
1968 360.0 618.1
1969 382.6 645.1
1970 399.1 638.8
1971 424.1 696.4
1972 451.2 765.2
1973 470.6 719.9
1974 493.6 762.4
1975 508.0 765.4
1976 516.6 714.3
1977 523.0 802.0
1978 533.3 1,033.8
1979 560.6 871.6
1980 617.2 915.5
1981 636.6 952.0
1982 655.3 989.8
1983 676.4 1,021.8
1984 705.4 1,048.5
1985 738.8 1,042.0
1986 770.2 1,105.5
1987 812.7 1,184.8
1988 858.2 1,237.9
1989 915.9 1,242.1
1990 995.8 1,300.8
1991 1,129.1 1,456.1
1992 1,292.1 1,638.1
1993 1,497.6 1,838.9
1994 1,785.4 2,349.9
1995 2,157.2 2,922.0
1996 2,651.2 3,433.0
1997 3,095.3 3,788.7
1998 3,385.1 4,143.9
1999 3,609.1 4,250.3
2000 3,799.1 4,223.0
2001 3,745.6 3,921.2
2002 3,670.0 3,727.8
2003 3,607.0 3,537.0
2004 3,569.7 3,258.0
2005 3,453.1 2,999.4
2006 3,364.9 2,636.2
2007 3,281.5 2,200.0
2008 3,114.9 1,981.4
2009
3,110.4b
1,783.8b
2010 2,933.0 1,678.0
2011 2,908.5 1,599.1
2012 2,927.4 1,425.6
2013 2,919.1 1,344.1
2014 3,011.6 1,187.8
2015 3,081.8 1,060.8
2016 3,155.2 946.5
2017 3,171.4 856.6
2018 3,230.0 761.1
2019 3,182.6 661.6
2020 3,085.4 603.1

Footnotes

a
From 1995 including the number of ISDN channels.
b
From 2009, fixed broadband VoIP channels (via DSL or optic cable) are included here.
.