Over 22,000 municipalities in the US have restrictions on smoking in workplaces, restaurants, and bars. 30 states and DC restrict smoking in restaurants and bars, while 24 states and DC have banned smoking in all indoor public places. There are also over 1,180 US colleges and universities that ban smoking. Cigarette smoking causes over 440,000 deaths annually in the US, while awareness and use of e-cigarettes grew significantly between 2010 and 2011.