The table illustrates the number of adults and children who participated in a wildlife survey in Britain over the eight-year period from 2001 to 2009.
Overall, total participation in the wildlife survey experienced a significant upward trend, with adult involvement dominating the figures until a dramatic surge in child participation occurred in 2009.
In 2001, the survey began with a modest total of 48,000 participants, comprising 36,000 adults and 12,000 children. Participation grew rapidly by 2003, reaching 248,000, with adults accounting for the vast majority at 212,000. This upward trajectory continued for adults, peaking at 332,000 in 2005, while child participation remained relatively low, fluctuating between 31,000 and 36,000 during the 2003 to 2007 period.
By 2009, the data showed a notable shift. While adult participation declined to 270,000, the number of children taking part increased exponentially to 270,000, matching the adult figure exactly. Consequently, the total number of participants reached a period high of 540,000 in 2009, representing a substantial increase from the initial figures recorded at the start of the decade.