Countries 1992 2000 2011
Luxembourg 4.91 4.84 5.59
United Kingdom 4.66 4.45 4.29
Belgium 4.71 4.74 3.38
Denmark 7.85 4.96 3.15
Germany 4.16 3.43 3.06
Czech Republic 3.96 3.2 2.9
Poland 1.92 2.08 2.03
France 2.16 2.38 1.92
Austria 2.09 1.75 1.9
Spain 1.01 1.4 1.77
Slovakia 2.06 1.83 1.72
Bulgaria 2.67 2.16 1.54
Latvia 1.69 1.09 1.51
Lithuania 1.89 1.6 1.47
Estonia 1.46 1.32 1.35
Switzerland 1.39 1.17 1.25
Ireland 1.28 1.27 1.13
Slovenia 1.12 1.03 0.99
Liechtenstein 1.51 1.32 0.95
Albania 0.43 1.45 0.65
Sweden 0.75 0.61 0.5
Finland 0.3 0.4 0.39
Norway 0.3 0.25 0.22