"Figure 23: Between 2010 and 2019, there has been a decline in the average number of bees counted","" "Average number of bees per kilometre and annual variation of this average (standard deviation) counted on BeeWalk surveys for semi-natural habitats, Great Britain, 2010 to 2019","" "","" "Notes","" "Unit","Number of bees per walked km" "","" "","All bees","Mean minus standard deviation","Mean plus standard deviation" "2010","30.2","-40.8","101.3" "2011","20.7","-25.5","66.8" "2012","24.9","-6.6","56.4" "2013","20.8","-12.2","53.8" "2014","25.4","-9.5","60.3" "2015","24.8","-12.8","62.3" "2016","26.0","-10.1","62.0" "2017","28.1","-38.9","95.1" "2018","23.6","-8.8","56.0" "2019","25.6","-14.4","65.6"