Countries	Country	2004	2007	2010	2012
Austria		6.64	3.06	1.12	0.39
Belgium		17.28	11.47	29.84	10.4
Bulgaria		0	75.83	34.26	12.8
Czech Republic		20.14	14.19	7.7	4.75
Denmark			0.78	0.66
Finland		16.37	13.2	18.2	18.05
France		11.78	8.71	6.19	5.13
Germany		2.28	2.17	1.48	1.15
Greece		10.3	7.35	6.17	6.06
Hungary		12.16	4.64	7.06	4.45
Iceland				26.58	23.82
Italy		3.92	5.71	3.27	2.08
Lithuania		15.68	10.63	2.61	3.1
Netherlands		9.56	8.7	5.82	5.38
Norway		30.97	21.4	27.3	17.69
Poland		13.26	20.67	15.29	11.18
Portugal		21.55	20.19	10.6	10.44
Romania		0	9.53	5.85	2.8
Slovakia		19.84	21.13	19.31	13.68
Spain		7.67	5.33	4.73	5.12
Sweden		15.08	10.71	11.71	10.97
Switzerland			1.21	1.2
United Kingdom		16.35	11.96	10.66	9.28