The Danish ambassador to Ireland, Niels Pultz, says there was also another factor relevant to Ireland - cross-border shopping.

BBC: Charity calls for sugar tax in Irish Republic

Though many retailers across the region, perhaps surprisingly, spy benefits in price transparency, the cross-border shopping boom, also maybe surprisingly, has not set off a public chorus for euro membership.

ECONOMIST: Scandinavian shoppers

Businesses in the Republic have been hit by shoppers travelling north to avail of cheaper goods and a lower VAT rate, and revenue lost to cross-border shopping has been a sore point for the Irish government.

BBC: Striking workers head north for bargains