The line graph compares the proportion of people visiting the gym between 1990 and 2010, categorized into four groups according to their ages. Overall, all age groups recorded an upward trend throughout, with the youngest group overtaking the 25-34 years old visitors, while the oldest group remained the lowest during the timeframe.
Focusing on the leading figures, the percentage of 18-24 and 25-34 years old gym visitors started at the same point, just under 10% in 1990. The former group experienced a marginal increase to about 12% in 1994, before jumping to 60% in 2006. In the following four years, it rose by 1%, finishing at 61% and becoming the leading figure in gym visits. Regard to the latter group, which showed a consistent increase by the final year, reaching just over 50% in 2010.
As for the other groups, 35-44years old visitors started at about 7% in the initial year, and it was followed by a steady rise by 2006, reaching virtually 22%. Finally, the figure of 35-44 years old gym visitors increased dramatically to 40% in 2010. Regarding the oldest group, the percentage of people aged over 45 commenced at roughly 4% in 1990, before experiencing a gradual climb during the 20-years period, finishing at just over 20%.