"We stand ready to provide liquidity as we have done in the past," Trichet said.
The outflow of deposits is a measure of eroding trust in the region's financial system. Banks outside of Greece, Ireland, Portugal and Spain have $1.7 trillion at risk in loans to those countries' governments and corporations, as well as guarantees and derivatives contracts, according to the Bank for International Settlements.
Concern that those nations will default or leave the EU and devalue their currencies has hastened the flight, according to Dimitris Giannoulis, a Deutsche Bank AG analyst based in Athens.
People "are now afraid of the possibility of returning to the drachma," said Giannoulis, referring to the Greek currency in circulation before the country adopted the euro in 2001. "Just a headline is enough to spook depositors."
Irish Banks Hurt
Irish banks have been the hardest hit. Losses on the collapsing real-estate market and a government guarantee of bank liabilities forced the nation to seek EU assistance in November. The money started flowing out in early 2010 as confidence in the government's ability to support the banks waned, and it accelerated later that year after Ireland's rescue by the EU led multinational companies to move deposits out of the country.
Ireland took control of five lenders and is winding down two of them. Even Bank of Ireland, which wasn't nationalized because its losses weren't as catastrophic, saw deposits dwindle by 20 billion euros, or 23 percent, last year.
At Allied Irish Banks Plc, Ireland's second-largest lender, deposits declined 37 percent over the past 18 months. The bank said July 25 that most of the drop occurred at the end of 2010 and in the first quarter of this year as companies pulled money amid sovereign and bank downgrades. Deposits since the end of the first half have been "broadly stable," said Alan Kelly, the lender's director of corporate affairs and marketing, who declined further comment.
'Afraid of Them'
While "the rate of outflow is falling," Finance Minister Michael Noonan said on Sept. 1 in Dublin, that hasn't soothed savers such as Phil Carey, an 86-year-old mother of eight from Galway in western Ireland.