Data gleaned from the bar chart shows the composition of different types of family sizes in the United Kingdom from 1981 to 2001.
Overall, living arrangements consisting of over 3 people dwindled significantly over two decades, while smaller household sizes witnessed an upward trajectory, with households comprising two people dominating throughout.
In 1981, having two or three occupants in a UK household unit was the most prevalent, with the higher proportion of the average family size of two people, making up respective shares of 31% and 20%. Throughout the recorded time-frame, the popularity recorded a change, specifically the contrasting trend of two household sizes. Two-person households saw a modest ascent of 3%, while households including three individuals witnessed a marginal drop by the same margin. Further scrutiny of the chart shows that, albeit with a lower percentage of 17% in 1981, single-person households recorded an upswing by 2001, subscribing for the second tier, surpassing both the living arrangements consisting of three or four individuals.
Concerning the remaining categories with the lowest values, living arrangements including four occupants accounted for 18% in 1981, while those consisting of five and six individuals shared almost comparable figures of 8% and 6%, respectively. Over 20 years, trends of these three household sizes experienced a moderate fall, equivalent to 4% to 2%.