The bar chart shows the percentage of mobile phone usage in an unspecified nation by several age categories from 1998 to 2000. Overall, the age group of 16–30 years less than 15 and 50 or more witnessed an upward trend, while the reverse was true for 31–50 years. It is evident that the use of mobile telephones by people under the age of 16–30 became the dominant pattern throughout the period.
In 1998, the number of 16–30-year-olds using mobile phones stood at 53%, this being the highest trend in the year before dipping gradually from 53% to 44% in the final year. The next-ensuing year trend for less than 15 years accounted for roughly 2% at the beginning of the year; despite starting at the lowest point, it rose steadily, and it reached its peak point of approximately 9% in 2000. In the same year, the index for 50 or more individuals showed 4% in 1998, after which it experienced a gradual rise and reached roughly 10% in the final year.
The trend for 31–50-year-olds bucked the foregoing index over the period. In 1998, it accounted for 41%, and it dipped steadily in the middle of the year. Having fallen from 41% to 39%, it experienced a soar dip, and it reached its lowest point at 37% in the final year, respectively.