USA Today reported (Anthony Breznican and Gary Strauss, “Where Have All the Moviegoers Gone?” June 23, 2005) that in the summer of 2005, ticket sales to movie theaters had fallen for 17 straight weeks, the industry’s longest losing streak since 1985. To determine the long-term trends in ticket sales, the following data representing the number of admissions (in billions) were obtained from the National Association of Theatre Owners:

a. Produce a line plot of the data.
b. Describe any trends that you detect.