The provided bar chart compares four different types of airline ticket classes of Wright Brother Airways in terms of the percentage of these types of tickets that were chosen for 10 years, commencing from 2005.
Overall, it is clear that the figure for business class booked tended to drop while the opposite trend was true for the remainders. Another notable point is that premium economy was the most favourite choice during the given period.
Initially, in 2005, the percentages of economy-class tickets and first-class tickets booked started at 80% each. Over the next 5 years, these figures continued to remain unchanged. However, from 2010 onwards, the rate of economy-class tickets booked rose significantly by 10% while that of first-class tickets witnessed a slight increase of 5% in 2015.
Regarding the other types of flight-class tickets, in 2005, 85% of premium economy-class tickets bought was higher than that of business-class by 5%. From 2010 forward, the proportion of premium economy-class tickets opted went up considerably to 95% and stayed stable in 2015. By contrast, there was a sudden decline in choosing business-class tickets to 65% before undergoing a 10% growth at the end of the period.