From the given chart, we can calculate the proportion of tea exported to tea produced for each year:
- In 1996: $\frac{561}{189} \approx 2.97$
- In 1997: $\frac{587}{209} \approx 2.81$
- In 1998: $\frac{645}{215} \approx 3.00$
- In 1999: $\frac{660}{220} = 3.00$
Since the highest proportion is 3.00 in 1998 and 1999, the Correct Answer should be 1997.
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Question: 2
In which of the following years was the population of Chaidesh the lowest?
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When comparing trends, look for the lowest values in the graph and consider what factors they might be related to, such as population or production.
From the bar chart, we can see that in 1995, the per capita availability of tea is the lowest compared to other years. This suggests that the population in 1995 was the lowest as the per capita availability is influenced by both production and population.
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Question: 3
The area under tea cultivation continuously decreased in all four years from 1996 to 1999, by 10%, 7%, 4%, and 1%, respectively. In which year was tea productivity (production per unit of area) the highest?
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When evaluating productivity, consider both production and area to identify the year with the highest production per unit of area.
Tea productivity is measured by the ratio of tea produced per unit of area. Since the area under cultivation decreased in each year, and tea production increased steadily (from 1996 to 1999), the highest tea productivity would be in the last year with the lowest decrease in area. From the production and export data, we see that in 1999, tea productivity reached its peak.