the graph shows the percentage of household which owned 4 electric devices, include mobile phone, desktop telephone, computer and smart phone in a country from 1995 to 2015.In general, people use destop telephone rate gradually decrease over time, while other were more similar. Especially, mobile phone was the device which had been the most popular in last period.
In 1995, almost family had telephone with 98%. However, this amount gradually went down to 92% in 2000 ,80% in 2005,65% in 2010 and stoped at 58% in final year. In contrast, propotion of people who has mobile phone noticable increased from 5% to 45 in the first year, then flew up to 85% in next 5 years and reached at 98% in final year.
Computer was also more well-known in survey period, while occurrence rate in families went up stedily overtime and reach four-fifths in each household. Besides,the percentage mobile phone user was 0% in 1995, until 2000 this number rose to 5%. After that, propotion of people who own mobile phone increased significantly to 20%,55% and increased more 35% in final year.
