The use of a space as a thousands separator has been around since the 1940s as recommended by the International Bureau of Weights and Measures and it was what we used when I was a kid at school in the UK. They specified it should be a thin (half) space.
No I know, it's also part of the French standard. Just more so commenting on how uncommon it is from Canadian English speakers despite it being the Canadian English "standard" recommend by a Canadian entity similar to the French or German standards bodies.
graypegg|1 year ago