All of the English-speaking areas listed on that page use a period as a decimal separator. Interestingly, Canada uses both characters as decimal separators, bu

All of the English-speaking areas listed on that page use a period as a decimal separator. Interestingly, Canada uses both characters as decimal separators, but English always uses a period, and French always uses a comma. That's probably also why Canada also uses a space as a thousands separator, not a comma like the US.