A. From 1970 to 1980, the number of pounds of glass per person per day increased by 0.002 per year
B. From 1980 to 1990, the number of pounds of glass per person per day decreased by 0.001 per year.
C. From 1990 to 2000, the number of pounds of glass per person per day remained constant.
D. From 2000 to 2010, the number of pounds of glass per person per day increased by 0.003 per year.
E. From 2010 to 2020, the number of pounds of glass per person per day decreased by 0.002 per year.