The bar chart illustrates the total drug yields of a company in three different regions: America, Europe, and Asia between 2002 and 2006.
Overall, the total sales number in America and Europe particularly declined, whereas Asia witnessed an upward trend in the proportion of drugs sold. Furthermore, America had the most people buying drugs at the beginning of the period, followed by Europe and Asia.
To commence, the American firm sold the most drugs in 2002, at 41%, followed by Europe, at 34%. Notably, total revenue in Europe marginally grew to its peak in the middle year, at 38%, while America only yielded 27%, which was the lowest proportion throughout the period of America. During the latter half of the period, Europe started to decline by 8% in 2006, standing at 30%, equal to that of America, which had a marginal increase of 3%.
Regarding Asia, the country only accounted for 25% of drugs being sold in 2002; after that, this figure plunged onwards until 2006, about two-fold of the beginning proportion, at 40%. Moreover, the aggregate revenue in Asia notably overtook that of the two given countries, standing at the highest percentage at the end of the period.