The line graph describes how many international conferences were organized across three cities from 1965 to 2010.
In general, while there was a downward trend in organizing conferences in City A and City B with fluctuation over the period, an upward trend was observed in City C. Interestingly, although City A initially organized the most conferences, it ended the period with the least figure.
In detail, City A began the period by organizing 35 conferences in 1965, and this figure plunged to 25 in a decade. In the following ten years, the figure for conferences had surged to 30, after which it had experienced a marginal decrease, making up about 27 conferences until it bounced back to 30 in 2005. However, there was a substantial decrease, organizing 20 conferences in the subsequent five years. Starting with about 31 conferences, City B held around 28 conferences with a negligible decrease in 1975 and it, then stayed almost unchanged with 29 in a decade. In the next ten years, the figure of conferences fell noticeably and dropped to slightly below 26 conferences, followed by fluctuation finishing with 20 conferences at the end of the period.
In contrast, while City C didn’t organize any conference in 1965, the figure soared to around 28 in 30 years. And then, it decreased noticeably, comprising 24 in 2005 before rebounding to the high-chart of 29 at the end of the period.