2012 (MMXII) was a leap year starting on Sunday of the Gregorian calendar, the 2012th year of the Common Era (CE) and Anno Domini (AD) designations, the 12th year of the 3rd millennium and the 21st century, and the 3rd year of the 2010s decade. 2012 was designated as: International Year of Cooperatives International Year of Sustainable Energy for All Source: Wikipedia (en)