year	Arctic Ocean (13)	Baltic Sea (373)	Black Sea (143)	Celtic Seas, Bay of Biscay, Iberian Coast (169)	Greater North Sea (397)	Mediterranean Sea (132)
1992	0.0451	1.6231	2.5607	2.3346	4.3458	1.5635
1993	0.0372	1.5266	2.3567	2.3319	4.3324	1.279
1994	0.0525	1.4325	2.5919	2.3584	4.2306	1.3538
1995	0.0529	1.4305	2.6721	2.2341	4.0831	1.3492
1996	0.0527	1.3989	2.9683	2.587	4.1159	1.6349
1997	0.0542	1.3833	2.762	2.6496	3.9955	1.2722
1998	0.0435	1.6433	2.4224	2.6739	4.2151	1.1501
1999	0.04	1.3866	2.4402	2.6456	3.9407	1.135
2000	0.0457	1.4055	2.4074	2.4826	3.821	1.2935
2001	0.0513	1.4095	2.3276	2.4446	3.7481	1.1129
2002	0.0504	1.344	2.2671	2.3326	3.6836	1.0995
2003	0.0453	1.2656	2.2373	2.366	3.5756	1.0922
2004	0.0354	1.4401	2.2259	2.5521	3.8203	1.2629
2005	0.0431	1.3209	2.1525	2.4544	3.5313	1.2289
2006	0.0564	1.3423	2.4898	2.6438	3.7124	1.2115
2007	0.0401	1.4698	2.2118	2.6586	3.6065	0.9806
2008	0.0349	1.3496	1.9795	2.5846	3.4771	0.998
2009	0.0357	1.2452	1.9905	2.4492	3.3166	0.9796
2010	0.0423	1.3049	2.1215	2.4536	3.4928	1.0438
2011	0.0372	1.2793	2.1768	2.3154	3.3518	0.9472