The given line graph demonstrates the number of computers owned per house in a one European country over the 14-year period from 1997 to 2011.
Overall, all trends showed an upward trend in the proportion of houses, except for households with no computers which witnessed downward trend. Houses with only one computer had the highest numbers, overtaking houses with no computers at the beginning. Houses with three or more computers remained at the bottom of the list throughout the period, despite an overall increase.
Focusing on details, houses with three or more computers per house and houses with two computers experienced somewhat similar patterns. In 1997, the number of houses with three computers remained at zero until 1999 and experienced a slight increase to about 7% by 2011. Meanwhile, the percentage of houses with two computers started at approximately 8%. This was followed by an increase to 20% in 2005, before slight drop to 19% and a rise to almost 30% by the end.
In terms of percentage, households with one computer remained almost the same throughout the period, starting at about 44% in 1997 and increasing to 45% in 2011. In contrast, while the number of households with no computers was dominant at the beginning, it followed a dramatic decrease over the period, starting with approximately 48 percent and ending with about 20%