Year	Full (km)	Partial (km)	Length of line
1933	2.646	739	53.816
1934	1.545	987	53.871
1935	1.336	645	54.331
1936	1.350	645	54.458
1937	1.238	1.560	54.522
1938	1.026	1.685	62.942
1939	1.497	1.200	72.656
1940	1.381	761	75.553
1941	2.077	1.186	78.257
1942	1.771	1.295	78.730
1943	2.039	1.013 (1)	78.879
1944	1.700 (2)	1.155 (1)	75.763

Footnotes

1. Estimate
2. Preliminary figure

Sources used

Alfred C. Mierzejewski - The Most Valuable Asset of the Reich: A History of the German National Railway 1933-1945