On January 4, 1957 the price of a sprocket was $66.67. On January 4, 2015 the price of a sprocket was $100.99. Find the average rate of change in the price of a sprocket from 1957 to 2015. Round to the nearest cent.

The average rate of change is $LaTeX: \displaystyle \frac{100.99-66.67}{2015-1957}= 0.59$ dollars per year.