Propane fuel serves approximately 60 million people in the United States. In 1999, 19.6 billion gallons of propane were consumed in the U.S. as follows:
8 billion gallons for residential/commercial/ recreational usage.
0.4 billion gallons for internal combustion engine usage.
9.8 billion gallons for chemical, industrial and utility usage.
1.4 billion gallons for other uses, including such agricultural applications as grain drying and flame cultivation.