Year	All common birds (163 species)	All common birds, 1980-1989 (based on 7 countries)	All common birds, 1990-2011 (based on 27 countries)	Common farmland birds (39 species)	Common farmland birds, 1980-1989 (based on 7 countries)	Common farmland birds, 1990-2011 (based on 27 countries)	Common forest birds (33 species)	Common forest birds, 1980-1989 (based on 7 countries)	Common forest birds, 1990-2011 (based on 27 countries)
1980	100	100		100	100		100	100
1981	104	104		93	93		111	111
1982	96	96		86	86		104	104
1983	95	95		78	78		106	106
1984	93	93		77	77		99	99
1985	87	87		69	69		98	98
1986	84	84		64	64		91	91
1987	89	89		67	67		96	96
1988	90	90		64	64		99	99
1989	99	99		66	66		117	117
1990	99	99	99	65	65	65	115	115	115
1991	97		97	62		62	117		117
1992	95		95	62		62	110		110
1993	96		96	67		67	100		100
1994	96		96	63		63	109		109
1995	90		90	53		53	98		98
1996	90		90	51		51	101		101
1997	91		91	54		54	105		105
1998	88		88	53		53	95		95
1999	88		88	54		54	94		94
2000	87		87	52		52	92		92
2001	89		89	52		52	95		95
2002	89		89	50		50	98		98
2003	89		89	50		50	100		100
2004	92		92	52		52	104		104
2005	88		88	50		50	98		98
2006	87		87	49		49	99		99
2007	89		89	49		49	97		97
2008	89		89	48		48	102		102
2009	86		86	47		47	98		98
2010	87		87	47		47	99		99
2011	87		87	47		47	101		101