It's a stark statistic: Each year in the U.S., more than 34,000 people commit suicide. But that's not the whole story. Truth is, suicide rates vary tremendously across the country, with the highest rates tending to be in rural areas and places where depressed people have easy access to firearms. Where is suicide especially prevalent? Keep clicking to see 20 states with highest rates, based on CDC data for 2007, the most recent available...