The line graph illustrates British families with their usage of cars during the period from 1971 to 2007.
Overall, it can be clearly seen that the proportion of families owning two and three or more cars was increasing steadily, while the proportion of people without cars was declining significantly. In contrast, households with one car remained steady.
In detail, the percentage of individuals without cars accounted for almost 48% in 1971, even though after decreasing considerably with mild fluctuations the percentage composed approximately 25% in 2007. The ratio of households owning three or more cars rose by almost 4% during the whole time.
The trend of people who have 2 cars remained stable at the same rate as people who have no cars at around 25% between the years 2003 and 2005. In addition, human beings with one car maintained the same level from 1971 to 2001 with minimal oscillations.