After the restoration of democracy, Greece's stability and economic prosperity improved significantly. Greece rejoined NATO in 1980, joined the European Union (EU) in 1981 and adopted the euro as its currency in 2001. New infrastructure funds from the EU and growing revenues from tourism, shipping, services, light industry and the telecommunications industry have brought Greeks an unprecedented standard of living. Tensions continue to exist between Greece and Turkey over Cyprus and the delimitation of borders in the Aegean Sea but relations have considerably thawed following successive earthquakes, first in Turkey and then in Greece, and an outpouring of sympathy and generous assistance by ordinary Greeks and Turks (see Earthquake Diplomacy).