The graph shows the number of enquiries received by a Tourist Information Office over six months in 2011. There were three ways people could contact the office: in person, by letter/email, and by telephone.
Looking at in person visits, they started at around 450 in January, which was the lowest figure among all three categories at that time. After that, the numbers went up every month and reached nearly 1,900 by June. This was the biggest change seen across all three methods during the period. Telephone enquiries also increased over the six months. They began at approximately 900 in January and rose gradually to around 1,600 by June. Although the trend was similar to in person visits, the growth was not as steep.
On the other hand, letter and email enquiries showed a different pattern. In January, the figure was about 750, which placed it in the middle of the three categories. The numbers stayed at a similar level until March, but then fell quite sharply, dropping to around 400 by May. After that, they did not change much and remained at a low level in June. Because of this fall, letter/email became the least popular method by the end of the period, even though it had been more popular than in person visits at the start.
Overall, the most noticeable trend was the large rise in in person enquiries, while contact by letter/email went in the opposite direction. Telephone enquiries grew steadily but at a slower pace.