NTT has initiated campaigns to reduce waste and combat global warming, such as reducing its consumption of energy and switching to low-emission vehicles. Each year, the NTT Group issues approximately 119.51 million telephone directories throughout Japan. In 2003 this translated into 103,000 tons of paper, or approximately 0.2 percent of the total amount of paper used in Japan, by 2007 the amount had been reduced to 73,000 tons and 65 percent of this was recycled pulp. NTT regularly evaluates its impact on the environment.