The line graph provides data on the percentage of people visiting the gym between 1990 and 2010.
Overall, despite being the most active participants initially, the 25-34-year-old group was surpassed by the youngest cohort during the middle years. Notably, all age groups witnessed identical figures in the first year, which by the end of the timeframe varied widely, indicating a decrease in attendance with age.
Regarding the first half of the timeframe, it is evident that 25-34-year-old participants showed a considerably higher rate, while for the oldest group, the reverse was true. Starting off at relatively 10% in 1990, all cohorts began to rise, with 18-24 and 25-34-year-olds increasing markedly to just below 20%, while the remaining categories exhibited a minimal change. For the next eight years, an overall upward trend was observed. Accounting for the same share of 25%, the 18-24-year-old group, apparently, outcompeted the 25-34-year-olds, reaching 40% by 2002. Meanwhile, more mature groups continued to record a similar proportion, rising to 20% (35-44-year-olds) and 11% (45+) by 2002.
In the second half, on the other hand, visitors of all ages tended to visit the gym more frequently. The younger groups continued to top, with 18-24-year-olds reaching their peak of 60% by 2010, which was almost twice as high as the figure for the oldest group in the same year. In the meantime, the 25-34 and 35-44-year-olds followed a somewhat similar pattern, hovering at 50% and 40% by the final year.