The given graph illustrates how many visitors used airports in the three major British country like a Heathrow, Gatwick and Stansted, over a 6-year period between 1998 and 2003.
Overall, it is clear that the number of travelers who used Gatwick and Stansted airport witnessed an increase, while a fluctuation was seen in that of the Heathrow. It is also evident that Gatwick had the highest number of visitors for most of the time frame.
In 1998, 36.5 million passengers used Gatwick transport. This number rose gradually during the initial five years before soaring from 51.1 million in 2002 to 69.3 million in 2003. A roughly similar trend was seen in the number of people using Stansted transport, where it jumped from 17.3 million to a peak of 43.3 million in the first four years of the period, followed by a stable trend between 2001 and 2003.
27.2 million people were served by Heathrow transport at the beginning of the surveyed period. There was a sharp rise of 21 million in 2000 before keeping in a slow decrease to just 33,2 million in 2002, after which a higher number of travelers used it than other airports. In the last year of the period, this number increased to 45.6 million.