Bulgarians are using the DM since 1997 and the Euro since 1999, they just call it Lev. We have a currency board that requires every single Lev be covered by foreign reserves which as of current consist of 90% EUR and 10% USD, JPY, GBP and others. We cannot print money to control interest rates, worse we have no say in ECB policies at the moment.

For the Lev to be independent we have to exit the currency board but this is madness, since our exports are already adjusted to EU countries where the currency is EUR anyway.