The two bar charts demonstrate some statistics about a US bus company during the period from 1999 to 2003, including each year’s number of passenger complaints and a comparison of actual and target punctuality rates for buses’ arrival.
Overall, actual and target rates of bus punctuality were both highest in 1999. The rate of actual arrivals appeared significantly lower in the middle 3 years of the 5-year period, followed by a significant recovery in 2003, while target rate stayed in a low level since 2000. Meanwhile, number of passengers’ complaints generally increased over the 5 years, except a slight drop between 2000 and 2001.
In 1999, the expected rate for bus arriving on time stood at 80%, while the actual rate was slightly higher. However, the latter dropped to barely 30% in 2000, before climbed back to just over 40% in 2001 and stayed stable in the following year. However, it dramatically skyrocketed back to approximately 75%, between 2002 and 2003. As for the target rate of bus punctuality, it declined down to about 45% in 2000, and remained at 40% in the following two years, which was followed by a even lower expectation rate at only 35% in 2003.
Turning to the number of passengers’ complaints, it started at approximately 60 cases in 1999, and rose to about 90 in 2000. After a slight drop that took the figure back to about 80 in 2001, the number then steadily inclined, to 100 in 2002 and 120 cases in 2003.