The bar chart illustrates that mobile device usage in a country by age groups, among 1998,1999 and 2000.
Overall, constant growth was
witnessed in some age categories, 16-30 years old mobile phone users were dominant, while those 31-50 years old were almost stable.
In 1998, 16-30 years old phone users were dominant with 53%, despite of sligthly declining in 1999-2000 years, these catogorie has kept their dominancy, indicated 45-44 % between 1998 and 2000. In 1998, most low rate was the users who less than 15 years old, however, their rates has grown up quadriaple, namely, from 2% to 8-9% untill 2000.
Given that these periods, 31-50 years old users were almost stable with indication between 41-37%, they decreased slightly from 41% to 37% untill 2000. Furthermore, more than 50 years old mobile phone users have increased 2-2.5 times, from 4% untill 10%, between 1998-2000.