Group of countries

Exponent μ (Equation (8))

Sig.

Slope m (Equation (9))

Sig.

46 European countries

0.3378

0.000

0.0181

0.000

31 EEA countries

0.3382

0.000

0.0183

0.001

27 EU countries

0.3384

0.000

0.0188

0.004

19 EZ countries

0.2947

0.000

0.0187

0.036

15 non-EU TCEE countries

0.0031

0.0003