The line graph illustrates the number of international conferences held in three cities over a 45-year period from 1965 to 2010. Overall, the number of conferences in City C rose steadily, while those in Cities A and B declined over time. Notably, despite starting with no conferences, City C became the most popular by the end of the period.
Focusing on City C, it began with no conferences in 1965, but this figure increased significantly to just under 30 by 1995. Although it experienced a slight decline to 24 in 2005, it rose again to nearly 30 in 2010, making it the leading city in the final year.
In contrast, Cities A and B followed a downward trend. In 1965, City A hosted the most conferences (35), followed by City B with 31. Despite fluctuations over the years, City A’s figure fell consistently to 20 in 2010, while City B ended at 25 after a slight recovery in the middle of the period.