In the January 2004 issue of Consumer Reports, an article titled "Cut the Fat" described some of the possible problems in the diets of the U. S. public. The following table gives data on the increase in daily calories in the food supply per person. Construct a time-series plot to display the increase in calorie intake.

a. Describe the trend in calorie intake over the 30 years.
b. What would you predict the calorie intake was in 2005? Justify your answer by explaining any assumptions you are making about calorie intake.

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Year1970 1975 1980 1985 1990 1995 2000 Calories 3,300 3,200 3,300 3500 3,600 3,700 3,900