How much of the world's electricity supply is generated from wind and who are the leading generators?
"Worldwide wind power generation exceeded 200 billion kilowatthours in 2008, which is equivalent to the annual electricity consumption of over 18 million average households in the United States. Wind generation increased by about 25% from 2007 to 2008, and has more than tripled since 2003. This growth is mostly due to capacity increases in the United States, China, India, and Western Europe. Despite this growth, the world still generated less than 1% of its total electricity from wind power in 2008..."