The given line graph says about the three different letter/email inquiries and the amount by the Tourist Information Office in one city for a half year, starting from 2011.
It is clear that the number of in-person by-letter/email inquiries was the dominant up to June, and with by telephone contacts were also similar. However, the quantity of by-letter/email inquiries dwindled during this period.
To begin with, in-person by letter/email requests demonstrated a significant increase from April (800) to April (1300) about 500 before it came to 800 in April from 400 in January. Similarly, in the last 3 months (April-June) showed an increasing trend continuously (1300-2000) was approximately 700, while the line for by telephone demands displayed almost the same, except (Jan-Feb) section, there was a slightly decreasing point to 100 (900-800) and also it had stabilized at 1000 before went up to 1600 in June.
Conversely, only queries by letter/email went through a different trend. In the Jan-April period, there was no change, which means that reached stability at about 800, it was also the same as with the last period (May-June) showed under 400, before faced up with a straight decrease from 800 (April) to 400 (May).