Year	total route-km
1995	2002
1996	1997
1997	1998
1998	1998
1999	1905
2000	1905
2001	1696
2002	1775
2003	1774
2004	1782
2005	1771
2006	1771
2007	1766
2008	1765
2009	1767
2010	1767
2011	1767
2012	1767
2013	1767
2014	1767
2015	1877
2016	1911
2017	1911
2018	1911
2019	1911
2020	1911
2021	1919