The given chart illustrates the percentage of cars possession in an unspecified European country in the four decades consecutive from 1971 to 2001.
Overall, from 1971 onwards, the number of car ownership gradually increased. In 2001, most households obtained at least one car, with households had two cars accounted for the same proportion as that of no car.
In 1971, the number of households had no car constitued the highest, around 50% prior to decreasing down to 42% in 1981. Regarding households with one or two cars, with households possess one car, started at around 37%, followed by a slight drop after 10 years. On the contrary, the number of families owned two car in 1971 was 18%, subsequently, it witness a considerable ascent after a decade.
Shifting focus to the remaining years, in 1991, the percentage of one car ownership made up the summit, that of households not owning a car in 20 years before, subequent to a decade, it witnessed a slight decline. With the proportion of carless families, it stayed unchanged throughout the remaining phase. In terms of households with two cars, in 1991, the figure was at 20%, experienced a remarkable uptrend in after a decade