The bar charts present data about the performance of a US bus company, with regard to its buses arriving on time and the number of complaints made by the passengers.
Overall, the target rate of bus arriving on time declined each year, while the actual rate fluctuated but generally exceeded of the target rate. Meanwhile, the number of complaints made by passengers increased with some fluctuations in those years.
In 1999, about 82% of buses arrived on time, and this was about 2% higher than the target figure. In addition, the percentage of bus arriving punctually fell significantly to 30% after a year, which was about 10% lower than the expected rate. This figure rose again by 12% in 2001, similar to that in 2002, whereby the expected rate was moderately lower than the actual by about 2%. Subsequently, this rate went up just under 80% by 2003, which was more than two times higher than the target proportion.
Meanwhile, in the initial year, the number of complaints made by the passengers was about 60, and it jumped to about 90 after a year before experiencing a slight decrease in 2001. Later, the figure went up steadily, recording around 120 complaintes in this bus company in 2003.