The given table portrays data about the number of the two age groups participating in the marathon between 2008 and 2012.
Overall, the table compress the total runners in marathon throughout five years in terms of the differences of their ages which divided by two groups.
It is immediately noticable that the number of the total participants increased significantly in each year. There were more people who aged 18-39 that paticipated in marathon than the 40 and more years old group. However, the number of participants in both groups grew up throughout the period.
A closer inspection of the trends illustrates that from 2008 to 2011 the figure of older group increased steadily by fifty people every year and reached its peak in 2012 at 1050 participants. While, the total runners in the younger group increased around 150 people every year and also reached its peak in 2012 same as the fomer group.
