According to the CIA World Fact Book, "Latvia's economy experienced GDP growth of more than 10% per year during 2006–07, but entered a severe recession in 2008 as a result of an unsustainable current account deficit and large debt exposure amid the softening world economy. Triggered by the collapse of the second largest bank, GDP plunged 18% in 2009. The economy has not returned to pre-crisis levels despite strong growth, especially in the export sector in 2011–12. The IMF, EU, and other international donors provided substantial financial assistance to Latvia as part of an agreement to defend the currency's peg to the euro in exchange for the government's commitment to stringent austerity measures.