The line graph shows the number of cases of disease X in Someland between 1960 and 1995. Overall, the number of cases rose sharply at the beginning of the period, then fell sharply, and increased again towards the end. The trend can be divided into three clear stages.
In 1960, the number of cases was very low, at roughly 100. After that, it increased quickly and reached about 500 cases in 1975, which was the highest point on the graph. From 1975 to 1985, the trend changed, and the number dropped sharply to around 200. This was a significant decrease over ten years. However, after 1985, the number of cases started to rise gradually again. By 1995, it had risen to approximately 450, almost reaching its earlier peak.
In summary, the disease in Someland showed a fluctuating trend over the 35‑year period. It started with a sharp rise, then fell sharply, and finally increased steadily towards the end of the period.