The presented line graph delineates the trends in male and female gym memberships from 1980 to 2010.
A clear dichotomy is observed: while female gym memberships exhibited a consistent upward trajectory over the three decades, male memberships experienced notable volatility, culminating in a decline.
In 1980, the male gym membership commenced at approximately 1,000 individuals, subsequently escalating significantly to peak at around 5,000 in 1985. This surge, however, was ephemeral as male membership plummeted to approximately 2,000 by 1995. Following this decline, male memberships witnessed a resurgence, reaching close to 6,000 in 2005 before experiencing a drastic decline once again, ending at approximately 1,000 by 2010.
Conversely, the female gym membership trajectory initiated slightly above 1,000 in 1980 and demonstrated a steady increase, culminating in approximately 3,000 by 2005. Nevertheless, this upward trend was interrupted by a modest decline observed toward the end of the period, concluding at lower levels. Overall, this delineates a significant contrast between the stability of female memberships and the volatility of their male counterparts.