Year	total route-km
1995	1575
1996	1575
1997	1576
1998	1576
1999	1545
2000	1562
2001	1565
2002	1565
2003	1563.8
2004	1336
2005	1336
2006	1513
2007	1513
2008	1523.6
2009	1566
2010	1566.4
2011	1262.2
2012	1577.6
2013	1453.4
2014	1453.4
2015	1491
2016	1415
2017	1285
2018	1285
2019	1378
2020	1411
2021	1387