The 2010s began amidst a global financial crisis that started in the late 2000s. A sovereign-debt crisis in Europe began in early 2010, and the Greek government admitted that it was having difficulties servicing its large sovereign debt. In the summer and fall of 2011, bond yields for Italy and Spain spiked above 6 percent. By 2015 bond rates had returned to normal ranges across Europe, save for Greece, which accepted another, even more stringent bailout package. The size of the European Financial Stability Facility was increased from €440 billion to €2 trillion. Despite the Eurozone debt crisis, the American Dow Jones Industrial Average had its longest stretch of gains since the late 1990s tech boom. However, economic issues, including inflation and an increase in commodity prices, sparked unrest in many lower-income countries. In some countries, particularly those in the Arab world, political unrest evolved into socioeconomic crises, resulting in the Arab Spring.