The line graph gives information about the proportion of people attending the gym monthly by age group from 1984 to 2003.
Overall, except for people between the ages of 46 and 45, the other age groups showed an upsurge in the rate of gym participation every month. Additionally, the proportion of gym members in the 18-25 age group experienced the strongest upward trend at the end of the 19-year period.
In 1984, 30% of people aged 26-45 visited the gym every month, which was the highest rate of all ages, ranked third was the 18-25 age group with the proportion of visiting the gym was approximately 15%. The figure for both age groups noticeably increased for the next 10 years and shared the same data at around 35% in 1984 before the percentage of attending gym monthly of the 18-25 age group surpassed and soared to nearly 70%, which was higher than that of whom aged 26-45 by 10% in 2003.
The percentage of exercising in the gym every four weeks of the 46-65 age group was the second highest at roughly 25% in 1984, while that of the oldest group was the lowest at below 10%. After 1989, The percentage of taking part in the gym of the 46-65 age group began to stably decrease to below 20% which was lower than that of people over 65 by 8%.