Year	total route-km
1995	1907
1996	1907
1997	1907
1998	1907
1999	1907
2000	1907
2001	1907
2002	1907
2003	1907
2004	1907
2005	1907
2006	1907
2007	1907
2008	1989
2009	2190
2010	2109
2011	2109
2012	2109
2013	2109
2014	2109
2015	2109
2016	2109
2017	2109
2018	2295
2019	2295
2020	2295
2021	2295