The pie charts compare the proportions of people visiting the US from four different countries over a period of five years, between 1988 and 1992. Overall, the percentages of visitors from Mexico and other unspecified countries adhered to rising trends, albeit at varying degrees, while the reverse was true for Canada and China, with the former exhibiting consistently higher figures throughout. It is also clear that the share of visitors from other unspecified countries saw the most significant change.
Focusing on the increases first, visitors from other countries comprised only 10% in 1988, a figure that then grew exponentially to 28% in the next two years, which rose even further to 30% in 1992, reporting the most pronounced change in the chart. The percentage of Mexicans who visited the USA, however, followed slightly different patterns, declining by 5 percentage points from a quarter in 1998 to 20% in 1990 before staging a recovery to 26% by the end of the period.
Canada and China, on the other hand, bucked the foregoing trend. Canadian visitors accounted for the largest figure over the study period, despite a noticeable decline from 53% to 43% between 1988 and 1990, after which it closed with 40% in 1992. The last country—China—started at just 12% initially, which then shrank down to 9% in 1990 and reached a chart low of a mere 4% at the end of the period.