Answer
Around $\$16$ billion was spent on DVDs in 2004.
Work Step by Step
The graph shows the amount spent on the y-axis and the year on the x-axis.
Note that the year 2004 is represented by the third point from the left.
Note also that the height of the point corresponds to approximately 16 billion.
Thus, around $\$16$ billion was spent on DVDs in 2004.