Year	total route-km
1995	1006
1996	1006
1997	1006
1998	1016
1999	1016
2000	1016
2001	1016
2002	1016
2003	988
2004	974
2005	982
2006	982
2007	976.5
2008	976.5
2009	976.5
2010	976.5
2011	976.5
2016	1004
2017	884
2018	884
2019	884
2020	884
2021	884