Year Arctic Ocean (13) Baltic Sea (313) Baltic Sea (373) Black Sea (120) Black Sea (143) Celtic Seas, Bay of Biscay, Iberian Coast (143) Celtic Seas, Bay of Biscay, Iberian Coast (169) Greater North Sea (349) Greater North Sea (397) Mediterranean Sea (121) Mediterranean Sea (132)
1992 0.05 1.5 2.3 2.6 4.3 1.6
1993 0.04 1.4 2.1 2.5 4.3 1.3
1994 0.05 1.3 2.3 2.5 4.2 1.4
1995 0.05 1.3 2.4 2.4 4 1.4
1996 0.05 1.2 2.7 2.7 4.1 1.7
1997 0.05 1.2 2.5 2.8 4 1.3
1998 0.04 1.5 2.2 2.8 4.2 1.2
1999 0.04 1.2 2.2 2.8 3.9 1.1
2000 0.05 1.3 2.2 2.7 3.8 1.3
2001 0.05 1.3 2.1 2.6 3.7 1.1
2002 0.05 1.2 2 2.5 3.7 1.1
2003 0.05 1.1 2.1 2.4 3.6 1.1
2004 0.04 1.3 2 2.7 3.8 1.3
2005 0.04 1.2 2 2.6 3.5 1.3
2006 0.06 1.2 2.3 2.8 3.7 1.3
2007 0.04 1.3 2 2.8 3.6 1
2008 0.03 1.2 1.7 2.7 3.5 1
2009 0.04 1.1 1.8 2.5 3.3 1
2010 0.04 1.1 1.9 2.6 3.5 1.1
2011 0.04 1.2 1.9 2.4 3.3 1
2012 0.04 1.2 1.8 2.5 3.3 1