The given bar-chart provides the numbers of people that participated in the Olympics since it has started.
According to the chart, There are two categories, man and woman, which is supported by numbers at the vertical and time frame at the horizontal. Not only that, there is also a line-chart, which indicate the total number of participants in Olympics within 1924 to 2012.
The most obvious one in bar-chart is the significant difference in number of men entering games vs women entering games. At prior time (1924) of Olympic games, 3000 men were joined while only a small portion of women were participated. Men participants were increasing year by year, and, there is also small changes is women part until 2012. The number women players jumped a leap and hit approximately 5000 while men at around 6000.
Despite the variation between men and women, the total number of players in Olympics were definitely rising over time. It started with around 3000 at 1924 but the trend increased and hit over 10000 in 2012.
