Year all common species (**) common forest species (**) common farmland species (**)
1990 100 100 100
1991 97.3 100.6 93.9
1992 96.7 96.9 98.9
1993 96.9 87.7 98.4
1994 96.3 93.8 94.2
1995 91.2 87.2 83.2
1996 92.4 90.3 82.2
1997 92.3 93 87.5
1998 88 84 82.7
1999 88.4 81.2 85.2
2000 88.1 79.7 82
2001 91.8 82.2 85.4
2002 89.8 84.2 75.7
2003 90.2 85.7 77.5
2004 93.3 90.7 80.8
2005 89.9 86.6 78.4
2006 89.7 86.3 76.6
2007 91.3 84.8 76.2
2008 91 88.4 76.1
2009 87.3 84.2 74.1
2010 88.4 85.7 72.4
2011 89 86.8 74.2
2012 89.2 92.7 72.6