The line graph demonstrates a monthly attendance to a gym by European people according to their age from 1990 to 2010.
Overall, significant increases were seen in the proportions of all age groups. Notably, individuals at the age of 18-24 were dominant group visiting a gym, while the percentage of 45 and over year olds adults showed the least attendance.
In 1990, figures for both age groups at 18-24 and 25-34 were almost equal, indicating about 6% and 7% in the favor of the latter group. After this, they showed gradual increases; until 1998, when the percentage of 18-24 age group exceeded the proportion of people at 25-34, in 2006 becoming 60% and approximately 45%, respectively. This was followed by a rapid decline to 50%, which was observed in the figure of 18-24 year olds individuals; consequently, it revitalized and ended at 60%. Simultaneously, the proportion of the age group at 25-34 experienced minor fluctuation before reaching 50% of attending adults.
Regarding percentages of groups at the age of 35-44 and 45+, initially, they were similar at roughly 4%. Their increases were moderate, with dominating of the former group. In 2006, sudden growth was experienced by the proportion of age group at 35-44, while the percentage of individuals at 45 and over year olds seen a notable rise. By the end of the years, the figure of the former group reached 30%, meanwhile the percentage of the latter group ended up at just over 20%.