The table illustrates how many children and adults participated in a wildlife survey in Britain between 2001 and 2009.
Overall, the number of participants increased over the period, despite a slight decline in both groups in 2007. This was followed by a sharp drop in the number of adult participants in the subsequent year. Notably, adults accounted for the majority of respondents throughout most of the period, although by the end of the timeframe, the figures for adults and children had become equal.
A total of 48,000 people participated in the survey in 2001, of whom adults accounted for 36,000 and children for the remaining 12,000. Then, total participation expanded significantly in 2003, with adults soaring to 212,000 and children tripling to 36,000, pushing the total figure to 248,000. Although the number adult participants continued to increase substantially to 332,000, followed by total attendance at 364,000 in 2005, the figure for children dropped to 32,000 being ten times lower than adult respondents.
In 2007, both groups decreased marginally, with adults making up 331,000 of participants compared to 31,000 children, making total participation 362,000. While adult participation experienced the most significant decline to 270,000, the reverse was observed in the child participation, urging to 270,000, pushing the aggreagte total number to a peak of 540,000 in 2009.