Statistics

American Coffee Consumption Trends
(http://www.coffeeresearch.org/market/usa.htm)

1. Coffee drinkers spend on average $164.71 per year on coffee
2. 54% of the adult population of the United States drinks coffee daily
3. The average coffee consumption per capita in the United States is around 4.4 Kg
4. Among coffee drinkers (i.e. not per capita) the average coffee consumption in the United States is 3.1 cups of coffee per day
5. Per capita men drink approximately 1.9 cups per day, whereas women drink an average of 1.4 cups of coffee a day

More websites:
http://www.coffee-statistics.com/coffee_statistics.html

http://www.herbal-home-remedies.com/blog/?p=113

http://www.instah.com/health-updates/health-hazards-of-coffee-drinking/