In Cuba, ration coupons allow for only about half of the needed calories, and agriculture is so inefficient that Cubans spend about 50 to 70% of their gross income supplementing the food available through the state system (MP: Compared to about 6% for Americans). More than a quarter of the Cuban work force is involved in agriculture (MP: It's less than 2% in the U.S. and hasn't been 25% here since the early 1900s). A recent article in the Cuban press, noted in a study by the U.S. Department of Agriculture's Office of Global Analysis, quoted a high-level Cuban ministry of agriculture official who revealed that 84% of all food consumed in Cuba is imported.