However, despite the government's efforts, the economic situation kept worsening. On 5 February, Spain's risk premium reached the 100 basis point-mark in a black week for Madrid Stock Exchange—with the IBEX 35 falling by 9.3%. By early May 2010, unemployment had reached the 20% mark for the first time since the 1993 economic crisis, while the crisis in Greece, threatening to engulf the remained of the eurozone, caused the risk premium to rise dramatically by 60% to 170 basis points and the Madrid Stock Exchange to fall by 10%. As a result, Zapatero announced a €15 billion austerity package on 12 May aimed at preventing the country's default. Among the adopted measures were a cut of 5% in public wages, a pension freezing for 2011, cuts into dependency spending and the removal of the €2,500 birth allowance, among others. Zapatero's U-turn, breaching a previous pledge not to cut social spending, caused his and the PSOE's popularity ratings to plummet in opinion polls.