What is the population of August Wagenmann's city of death, as of 2015?
August Wagenmann: August Emil Ludwig Wagenmann (born 5 April 1863 in Göttingen; died 12 August 1955 in Heidelberg) was a German ophthalmologist. Heidelberg:  At the 2015 census, its population was 156,257, with roughly a quarter of its population being students.
156,257