COPENHAGEN (Reuters) – Denmark’s central bank raised its key interest rate by 0.60 percentage points to 1.25% on Thursday to its highest level in thirteen years, following a rate hike earlier in the day by the European Central Bank. Denmark, the first country in the world to impose negative rates in 2012, last month broke with a decade-long experiment of negative interest rates as it lifted its key rate into positive territory. “The interest rate increase is a consequence of the increase by the European Central Bank of its main monetary policy rate,” the central bank said in a statement. Earli…