The line graph illustrates the number of inquiries received by a city’s tourist information office through three different methods – by letter/email, by telephone, and in person – over a six-month period from January to June 2011.
Overall, the total number of inquiries increased significantly during the period. In-person inquiries experienced the most dramatic growth and became the dominant method by June, while the number of inquiries sent by letter or email declined steadily. Telephone inquiries also rose, although at a more moderate rate.
In January, telephone inquiries were the most common, at around 900, followed by letters and emails at approximately 750. In contrast, only about 400 people made inquiries in person. Over the following months, the number of face-to-face inquiries increased sharply, reaching about 800 in April and then climbing further to 1,900 by June. This figure was the highest among all three methods by the end of the period.
Telephone inquiries showed a generally upward trend. Starting at roughly 900 in January, the number remained relatively stable during the first two months before rising steadily to around 1,600 in June. Meanwhile, inquiries made by letter or email followed the opposite pattern. After beginning at about 750, the figure gradually fell throughout the six months, ending at just under 400 in June.
In summary, while all inquiry methods were used throughout the period, in-person contact became increasingly popular, whereas written inquiries lost popularity over time.