Greek drachma became Greece's sole currency. Between 1917 and 1920, the Greek government issued paper money in denominations of 10 lepta, 50 lepta, 1 drachma, 2 drachmae, and 5 drachmae. The National Bank of Greece introduced 1000-drachma notes in 1901, and the Bank of Greece introduced 5000-drachma notes in 1928. The Greek government again issued notes between 1940 and 1944, in denominations ranging from 50 lepta to 20 drachmae. In 1922, the Greek government issued a forced loan in order to finance the budget deficit. On April 1, 1922, the government decreed that half of all bank notes had to be surrendered
Bulgaria and the euro how to let a country using a currency board join the euro. The Prime Minister has stated the desire to keep the currency board until the euro was adopted. However, factors such as a high inflation, an unrealistic exchange rate with the euro and the country's low productivity are negatively affected by the system. Simeon Dyankov, Bulgaria's then-finance minister, said in September 2009 that Bulgaria planned to enter ERM II in November 2009, but this was delayed. It was then delayed further due to an increased budget deficit, outside the Maastricht criteria. Since 2011, Bulgaria's non-membership of the ERM has