This graph compares consumer expenditures in three American cities from 2007 to 2010.

A graph titled Average Household Consumer Expenditures from 2007 to 2010 has year on the x-axis, and average yearly spending on the y-axis. San Francisco had the highest spending, then Cleveland, and then Houston had the lowest spending.
The best inference that can be made based on the graph is that

This graph compares consumer expenditures in three American cities from 2007 to 2010 A graph titled Average Household Consumer Expenditures from 2007 to 2010 ha class=