I think this visual shows the information well and it is easy to interpret. The visual shows a trend in the data. As the years go by the hot dogs and buns eaten have increased.
Trend can also be important to look when we want to know or make predictions in the future.
This visual also shows what can translated as outliers by showing the bars with different colors. This can be useful in separating data that is out of the norm.
As one of the objectives of time series is interpret the information it is important for our end users to know what the data means.
Wagner's Blog 