The given table provides data on the average yearly travel distance for adults and the various means of transportation between 1997 and 2007. In general, two main trends occurred during this period: decrease and increase.
As depicted, the group of walking, bicycle, motorcycle, and bus experienced the relative decline in their recorded distances. Specifically, the respective numbers of distance by bicycle and motorcycle dropped from 100 to 80 miles and 100 to 90 miles. In contrast, distances traveled by walking and bus saw a significant drop, falling from 400 to 300 miles, and from 800 to 500 miles, respectively.
Besides, cars, trains, and taxis witnessed considerable growth during the mentioned period. The distances covered by cars had over doubled from 3500 to 7100, while the data of taxi had fourfold risen in the same period (200 to 800). In addition, trains had slightly increased as well, recorded from 900 to 1000 miles.