Industrial sector | a | b | Coefficient of determination | % Decline |
Food or agricultural | 3.980 | −0.066 | 0.823 | 6.36 |
Chemical | 2.532 | −0.041 | 0.859 | 4.06 |
Building | 3.988 | −0.032 | 0.907 | 3.14 |
Energy | 4.140 | −0.065 | 0.911 | 6.33 |
Wood | 2.111 | −0.019 | 0.550 | 1.87 |
Metallurgical | 2.546 | −0.008 | 0.260 | 0.81 |
Mining | 3.890 | −0.041 | 0.909 | 4.00 |
Textile | 0.571 | −0.007 | 0.129 | 0.72 |
Transport | 3.621 | −0.031 | 0.890 | 3.03 |
Overall | 3.385 | −0.045 | 0.970 | 4.42 |