Variable

Model 1

Model 2

Model 3

Model 4

Model 5

0.187117^**

(2.534891)

−2.555730^*

(−9.327618)

0.021898

(0.484733)

−1.630086

(−4.382602)

−4.934980

(−8.395179)

−0.115671

(−1.083508)

−0.822162

(−1.131784)

0.195819^*

(1.897733)

0.742325

（1.675867）

0.345214

(1.115712)

−0.290219^***

(−1.902965)

−1.149002^*

(−3.318637)

Adjusted R²

0.009074

0.014571

0.120427

0.086913

0.689109

D.W.

0.213826

0.232435

3.601389

0.161325

1.034997

F-statistic

1.173991

1.280935

0/159760

2.808529

15.03821