Year	total route-km
1995	1954
1996	1954
1997	1945
1998	1909
1999	1909
2000	1919
2001	1919
2002	1919
2003	1919
2004	1919
2005	1919
2006	1919
2007	1919
2008	1919
2009	1919
2010	1919
2011	1919
2012	1919
2013	1894
2014	1458
2015	1458
2016	2174
2017	1888
2018	1888
2019	1888
2020	1888
2021	1650