The line graph illustrates the proportion of households in Great Britain that had regular use of a car from 1971 to 2007, categorized by the number of cars: no car, one car, two cars, and three or more cars.
In 1971, the highest percentage of households (around 48%) did not have a car, but this figure steadily declined throughout the period, reaching approximately 25% in 2007. In contrast, households with access to two cars saw a consistent rise, increasing from about 8% in 1971 to roughly 26% in 2007.
Households with one car remained fairly stable, fluctuating slightly around the 43-45% range across the entire period. This indicates that one-car households were the most common throughout the years, although the gap between them and two-car households gradually narrowed.
Households with three or more cars made up the smallest proportion but showed a steady increase, rising from almost 0% in 1971 to just above 5% in 2007.
In summary, the graph shows a significant shift in car ownership trends in Great Britain over the 36-year period, with a decline in households without cars and a rise in multi-car households, especially those with two vehicles.