Table:
text: List of town tramway systems in the Netherlands
Gelderland
Gelderland
Name_of_System Location_ Traction_Type Date_From Date_To Notes
NTM (1889–1912) M&W (1912–1921) GTN (1911–1955) Nijmegen Horse 1889 1911 Nijmeegsche Tramweg-Maatschappij
NTM (1889–1912) M&W (1912–1921) GTN (1911–1955) Nijmegen Steam 30 June 1889 31 December 1921 Stoomtram Maas en Waal
NTM (1889–1912) M&W (1912–1921) GTN (1911–1955) Nijmegen Electric 4 June 1911 20 November 1955 Gemeentetram Nijmegen Replaced by trolleybus
GTZ Zaltbommel Horse 14 March 1910 31 August 1923 Gemeentetram Zaltbommel

Question: How many notes are in the list of urban tram systems in the Netherlands from March 14, 1910?