"Figure 21: Moths have declined by 2% and butterflies by 31% between 1990 and 2018","" "Woodland moth and butterfly index 1990 = 100, UK, 1990 to 2018","" "","" "Notes","1. The Rothamsted Insect Survey, a National Capability, is funded by the Biotechnology and Biological Sciences Research Council under the Core Capability Grant BBS/E/C/000J0200." "Unit","Index 1990 = 100" "","" "","Butterflies","Moths" "1990","100","100" "1991","92","122" "1992","110","117" "1993","57","76" "1994","61","82" "1995","88","115" "1996","88","123" "1997","90","115" "1998","59","82" "1999","51","102" "2000","53","85" "2001","51","89" "2002","58","71" "2003","71","104" "2004","71","102" "2005","61","92" "2006","59","103" "2007","42","64" "2008","39","76" "2009","57","87" "2010","64","88" "2011","57","89" "2012","32","67" "2013","58","95" "2014","53","82" "2015","51","53" "2016","36","68" "2017","49","81" "2018","69","98" "2019","59",""