The line chart compares the changes in the proportion of people who visited GYM once per month or more from 1984 to 2003.
Overall, there was a decrease in the figure for people who were in the 46-65 age group, while the reverse trend is true for the remaining groups. In addition, people aged 65 and over generally contributed the least percentage.
Looking at the 25-45 age group, it started at the largest proportion, with 30% in 1984. After that 5 years, this figure rose to 40%, before declining to hovering at 35% in 1994 and then growing to the highest point at over 50% in 2003. The percentage of people aged 18-25 began at a lower point (approximately 25%) in the first year. However, it increased dramatically, surpassed the 25-45 age group in 1994, with nearly 40% of the number of people visiting GYM and finally became the largest percentage of the total chart at roughly 70% in the last year of the period.
Regarding people who were aged 46 to 65 years old, the percentage of this group rose slightly over the first five-year period, after which it decreased significantly to under 20% in the final year. Meanwhile, the group of 65 and over people experienced a rise gradually from about 5% in 1984 to around 15% in 1994, and then peaked at approximately 20% in 2003, after exhibiting a slight decrease from 1994 to 1999.