The line graph illustrates the volume of enquiries received by the Tourist Information Office in a city over a six-month duration, from January to June 2011, categorized by three distinct methods of communication: in-person, letter/email, and telephone.
Overall, all three methods exhibited an upward trend in enquiries, with telephone enquiries consistently registering the highest figures, followed by letter/email and in-person methods. Notably, the growth rate of telephone and in-person enquiries diverged towards the end of the period.
In January 2011, the Tourist Information Office received approximately 200 in-person enquiries, 400 enquiries via letter/email, and just over 600 telephone enquiries. Throughout the six months, in-person enquiries demonstrated a significant increase, culminating at around 800 by June. Conversely, telephone enquiries, which began at the highest point, experienced a more pronounced growth, reaching nearly 1900 enquiries by the end of June, marking an increase of approximately 800 enquiries over the period. This indicates a strong preference among tourists for telephonic communication early in the year, which further intensified as the months progressed.
On the other hand, letter/email enquiries, while initially robust at around 400 in January, witnessed a gradual decline, peaking in March before enduring a significant drop of approximately 400 enquiries by June. This contrasts sharply with the rising trends of in-person and telephone enquiries, ultimately leading to letter/email enquiries being the least favoured method by the conclusion of the observed period. Thus, while in-person and telephone interactions grew steadily, letter/email methods became increasingly less utilized among tourists seeking information.