Year	total route-km
1995	2739
1996	2739
1997	2805
1998	2808
1999	2808
2000	2802
2001	2809
2002	2806
2003	2811
2004	2811
2005	2813
2006	2776
2007	2895.561
2008	2896
2009	2886
2010	3016
2018	3078
2019	3078
2020	3078
2021	3041