This Line chart depict pracentage of change in ownership of household with electric appliances and numbers of housework in one country from 1920 to 2019. It is clear from the graph that the ratio of household with electric appliances increased throughout the priod. According what is shown the washing machine and vacuum cleaner illustrated similar pattern both increased gradually from 30% and 40% per cent respectively between 1920 and 1996 , after that the vacuum cleaner rockeded to its peak in 2019, while washing machine is fluctuated from 1980 until 2019.