| Year | All common birds (163 species) | All common birds (163 species) | All common birds, 1980-1989 (based on 7 countries) | Common forest birds (33 species) | All common birds, 1990-2011 (based on 27 countries) | Common farmland birds (39 species) | 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1990 | 100 | 100 | 100 | |||||||||
| 1991 | 98.65118692 | 102.3602021 | 95.08816312 | |||||||||
| 1992 | 96.16364626 | 95.6031224 | 94.80885518 | |||||||||
| 1993 | 98.03021408 | 87.34188397 | 102.3329338 | |||||||||
| 1994 | 98.68887058 | 95.46999676 | 97.0441802 | |||||||||
| 1995 | 91.6558709 | 85.59255456 | 82.01353642 | |||||||||
| 1996 | 91.74013225 | 88.43025111 | 78.6922028 | |||||||||
| 1997 | 92.66982758 | 91.72662348 | 83.42709924 | |||||||||
| 1998 | 88.73811211 | 82.99598873 | 80.79042151 | |||||||||
| 1999 | 89.09044639 | 81.86492664 | 82.73521498 | |||||||||
| 2000 | 87.99331403 | 79.88056578 | 79.8904623 | |||||||||
| 2001 | 91.42431362 | 82.60647705 | 82.98070943 | |||||||||
| 2002 | 90.01864824 | 84.89881255 | 74.17093741 | |||||||||
| 2003 | 90.00862354 | 87.20753626 | 75.64807313 | |||||||||
| 2004 | 93.01682984 | 90.47685527 | 78.9857481 | |||||||||
| 2005 | 88.95856744 | 86.21085941 | 76.12509725 | |||||||||
| 2006 | 88.7818784 | 85.63322411 | 75.03905996 | |||||||||
| 2007 | 90.50583452 | 84.1198788 | 74.16198586 | |||||||||
| 2008 | 90.32797134 | 88.08133087 | 73.77351474 | |||||||||
| 2009 | 86.59894867 | 84.00240304 | 71.90375025 | |||||||||
| 2010 | 87.34591083 | 85.57374492 | 70.5785472 | |||||||||
| 2011 | 87.98411187 | 86.51181216 | 72.49418028 | |||||||||
| 2012 | 88.07183698 | 92.19260945 | 70.67199034 |