Year	total route-km
1995	610
1996	610
1997	610
1998	666
1999	663
2000	669
2001	676
2002	676
2003	615
2004	853
2005	910
2006	941
2007	958
2008	1043.203
2009	1051.911
2010	1034
2011	1078.937
2012	1142.544
2013	1153
2014	1194
2015	1277
2016	1340.105
2017	1495
2018	1521
2019	1598.916
2020	1619
2021	1720