@mpjgregoire
@ng0
Turns out spaces as thousands separators is pretty popular with standards institutes.
Wiki sez: "[...] officially endorsed by SI/ISO 31-0 standard, as well as by the International Bureau of Weights and Measures and the International Union of Pure and Applied Chemistry (IUPAC), the American Medical Association's widely followed AMA Manual of Style, and the Metrication Board, among others."