Year
|
Total length in use
|
Under construction, planned year of first operation
|
1981
|
451
|
0
|
1983
|
567
|
0
|
1984
|
641
|
0
|
1985
|
643
|
0
|
1986
|
643
|
0
|
1987
|
643
|
0
|
1988
|
733
|
0
|
1989
|
1024
|
0
|
1990
|
1024
|
0
|
1991
|
1133
|
0
|
1992
|
1628
|
0
|
1993
|
1749
|
0
|
1994
|
2343
|
0
|
1995
|
2447
|
0
|
1996
|
2447
|
0
|
1997
|
2447
|
0
|
1998
|
2708
|
0
|
1999
|
2708
|
0
|
2000
|
2708
|
0
|
2001
|
2967
|
0
|
2002
|
3229
|
0
|
2003
|
3943
|
0
|
2004
|
4264
|
0
|
2005
|
4285
|
0
|
2006
|
5184
|
0
|
2007
|
5480
|
0
|
2008
|
5750
|
0
|
2009
|
6126
|
0
|
2010
|
6602
|
0
|
2011
|
6830
|
0
|
2012
|
6879
|
0
|
2013
|
7298
|
0
|
2014
|
7316
|
0
|
2015
|
8036
|
0
|
2016
|
8036
|
164
|
2017
|
8036
|
901
|
2018
|
8036
|
1037
|