The chart below shows the percentage of a drug company's total sales, by region, from 2002 to 2006. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The bar chart illustrates the percentage distribution of a drug company’s total sales across three regions — Asia, Europe, and America — over a five-year period from 2002 to 2006. Overall, Asia saw a consistent increase in its share of sales, while America’s share declined notably. Europe’s contribution fluctuated slightly but remained relatively stable throughout […]