The bar chart provides information about how many people participated in a wildlife survey in Britain between 2001 and 2009. Overall, the number of adults exceeded that of children in most years, except for 2009, when the figure for adult and children were equal. Additionally, 2009 recorded the highest number of people participating in a survey, while the opposite was seen in 2001.
Regarding total, 2009 had the highest number of participants in surveys, at 540,000, compared to 364,000 people recorded in 2005. This was followed by 362,000 people in 2007, which moderately outnumbered the figure for 2003, at 248,000. By contrast, 2001 documented the lowest figure among all years, standing at 48,000.
Turning to 2009, 2007 and 2005, all categories had a high number of people conducting surveys. Adults reached a parity with children in 2009, both standing at 270,000. In contrast, there was a great divergence between adults and children in 2007 and 2005, with the former being 331,000 and 31,000 and the latter being 332,000 and 32,000 for men and women.
With regard to 2003 and 2001, sharing the same pattern as 2005 and 2007, albeit less pronounced, the number of adults made up a considerable share of the total, at 212,000 people, compared to 36,000 children. Likewise, the data for adults engaging in survey tripled that for their counterparts, reaching 36,000 people and 12,000 people respectively.