The line graph portrays trends in the proportion of registered figure in the three most prevalent means of transportation in the United States in the 40-year span, commencing in 1970.
Overall, what is most striking when looking at the graph is that truck recorded the highest number of registers over the period shown. While trucks and taxis experienced an upward trend, there was a slight decrease observed in buses.
Regarding buses, most widely-used vehicle, nearly half of American opted for them to serve their trading purpose in 1970, which were approximately two-fold commpared with the subscribing rate of taxis . In the next decade, the figure dramatically declined to precisely 30% before recovering to the initial level in the remaining time.
In terms of public transport, a similar pattern could be observed in taxis and buses with the exception of the last 10 years. Initially, about one fourth of individuals subscribed taxis for their profit-making, which was exponentially higher than the percentage in buses, constituiting 5%. Entering the 21st century, both reached a bottom of roughly 15% and 5%, respectively after following a ten-percent augmentation in 1980. By the end, the former experienced substantial growth to the peak of over 35%, in contrast, the latter continuously displayed a subtle shrinkage.