Year	Grassland butterflies	Grassland butterflies(Europe)	Trend line	Trend line(Europe)	Grassland butterflies(EU)	Trend line(EU)
1990		100		97.017	100	92.606
1991		109		94.931	97	91.299
1992		122		92.845	105	89.992
1993		87		90.758	73	88.686
1994		89		88.672	86	87.379
1995		66		86.586	81	86.072
1996		69		84.5	80	84.766
1997		77		82.414	84	83.459
1998		76		80.328	77	82.152
1999		72		78.242	77	80.846
2000		78		76.156	86	79.539
2001		62		74.07	69	78.232
2002		72		71.984	84	76.926
2003		77		69.898	77	75.619
2004		60		67.812	75	74.312
2005		60		65.726	76	73.006
2006		63		63.64	73	71.699
2007		64		61.553	68	70.392
2008		69		59.467	56	69.086
2009		57		57.381	64	67.779
2010		64		55.295	77	66.472
2011		59		53.209	72	65.166