The line graph illustrates the number of international conferences held in three different cities between 1965 and 2010. Overall, City C experienced the most significant growth over the period, while City A and City B showed more volatile trends with no clear long-term upward trajectory.
In 1965, City A hosted the highest number of conferences at 35, followed by City B with 31, while City C held none. By 1975, City A saw a sharp decline to 20, whereas City B remained relatively stable at 28. Conversely, City C began its upward trend, reaching 10 conferences. By 1985, City A recovered to 30, City B stood at 29, and City C continued its steady rise to 20.
From 1995 to 2010, the trends diverged further. City C overtook the others by 2010, reaching a peak of 29 conferences. In contrast, City A experienced a significant drop to 20 by 2010, matching its 1975 low. City B maintained a moderate level of activity throughout this period, ending at 25 conferences in 2010. While City A and B fluctuated throughout the four decades, City C demonstrated a consistent, albeit non-linear, increase in hosting international events.