I'm half-Ukrainian and spent a big portion of my childhood in Ukraine. I was never corporally punished as a child, I was barely even punished… but I was shocked to find out how common ремінне виховання (belt-based parenting) is. I recently found out from a Czech friend who thinks half of Czech kids are corporally punished, which also surprise me because I think of Czech Republic as a very forward-thinking country.
OTOH I know it is illegal in Norway and some really stupid Lithuanian parents think that the Norwegian child protection agency is "out to get them"… no, it's just that child abuse is illegal in Norway because it's civilized country…
How common is it in your country?