The line graph presents the data about the number of international conferences which were held in City A, City B, and City C between 1965 and 2010.
In general, the number of international conferences in both City A and City B decreased over the period, and the figure for City C experienced growth. At the beginning, City A had the biggest number of the conferences, whereas there was the lowest number of them in City C; however, at the end, the trend changed and City C became the leader among the other cities.
In 1965, the figure of international conferences in City A and City B were almost equal, at 35 and 30, respectively. Nevertheless, the number in City A decreased sharply in 10 years, while the figure for Country B was decreasing slightly. The number of international conferences in City A continued fluctuating, ultimately representing 20. International conferences gradually declined in City B, totalling at 20.
Regarding City C, despite the number of conferences at the beginning being 0, it surged to just under 30. Although it slightly decreased to around 25 in 2005, the total number reached almost 30 at the end.
