Year	total route-km
1995	4477
1996	3641
1997	3641
1998	3641
1999	3641
2000	3641
2001	3641
2002	4499
2003	4499
2004	3641
2005	3641
2006	4007
2007	4007
2008	3641
2009	3641
2010	3641
2011	3641
2012	3641
2013	3641
2014	3641
2015	3641
2016	3641
2017	3641
2018	3641
2019	3641
2020	3641
2021	3641