President Obama's approval rating is at its highest in over a year, according to new Gallup polling. 

The latest three-day polling average, from Dec. 27-29, puts Obama's approval at 48 percent, the highest it has been since August 2013. 

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Obama's disapproval is also 48 percent, marking the first time his disapproval has not been higher than his approval since September 2013. 

The poll comes after a year in which Obama faced approval ratings in the low 40s, as he contended with a range of crises, from Ebola to the rise of the Islamic State in Iraq and Syria, and in which Democrats suffered heavy losses in the midterm elections. 

As recently as the beginning of this month, Obama's approval was 41 percent, and his disapproval was 52 percent. 

The president ended the year with a string of accomplishments, including executive action on immigration, a climate deal with China and a move to open relations with Cuba. 

Gallup points out that the action on immigration could be a factor in the rising approval rating. The president's approval among Hispanics rose by 12 percentage points after his announcement of the action last month. 

The economy has been showing signs of strength, including the news last week that the economy grew at 5 percent, its highest level in 11 years, from July to September. 

Obama pointed to the stronger economy in an interview with NPR published Monday. He said that, at the end of 2014, he could “look back and say we are as well-positioned today as we have been in quite some time economically, that American leadership is more needed around the world than ever before — and that is liberating in the sense that a lot of the work that we've done is now beginning to bear fruit.”