Here are the statistics for Denmark.
"International Credit Card" are a small fraction of the total -- under 5%. The vast majority of transactions by number and value are by debit card.
(The national/international distinction is between Dankort, the Danish card payment system only used on most debit cards here, and the foreign companies like Visa and MasterCard.)
https://www.dst.dk/en/Statistik/emner/penge-og-kapitalmarked...