The chart illustrates data about how many North American people of various age groups who frequently go to the gym from 1990 to 2010. There are 4 lines give information about the amount of age groups according to years.
Overall, the red and blue lines, which represents subsequently 18-23 and 24-33 age groups made up the largest proportion of gym members despite significant fluctuations. The purple and yellow lines, which symbolize based on 34-43 and 44-53 age categories, show a lower ratio over the years.
Initially, the red line began approximately with 16%, which accounted the highest percentage among others. It reached 23% in 1994, 20% in 1998, and showed an upward trajectory during 1998-2010 and climbed the highest point (26%) in 2010.The blue line introduced the second highest proportion despite minor fluctuations which it rose between 1990-1994 and 1998-2006. Declines happened between 1994-1998 and 2006-2010. Even so, it reached the highest level with 25% in 2006 compared to other lines.
The purple and yellow lines showed a specific difference which they were stable between 1990-1994. Both of them climbed steadily between 1994-1998. Then, the purple line experienced a sharp rise compared to the yellow line between 1998-2010.