Lower your thermostat to 68 degrees and save 2%.

"It is estimated that you can reduce your energy bill by two percent just by lowering the temperature on your thermostat. You may want to consider setting your thermostat to 68 degrees Fahrenheit. Additionally, you should set the thermostat at a lower temperature when you are not at home."
http://www.homestructions.com/…/energy-efficiency-tips-for…/