(1)

(2)

(3)

(4)

(5)

(6)

(7)

lnxij

lnxij

lnxij

lnxij

lnxij

lnxij

lnxij

lnGDP1

0.859***

0.819***

0.826***

0.859***

0.854***

0.820***

0.824***

(15.39)

(14.42)

(14.51)

(15.30)

(15.59)

(14.33)

(14.74)

lnGDP2

1.332***

1.351***

0.986***

1.308***

-0.287

1.329***

-0.410

(30.44)

(30.11)

(8.50)

(29.37)

(-1.37)

(29.19)

(-1.86)

lndistcap

-0.627**

-0.583*

-0.584*

-0.617*

-0.621**

-0.575*

-0.589*

(-2.64)

(-2.50)

(-2.48)

(-2.56)

(-2.59)

(-2.43)

(-2.48)

contiguous

0.270

0.266

0.266

0.273

0.272

0.268

0.267

(0.78)

(0.78)

(0.78)

(0.78)

(0.78)

(0.78)

(0.77)

landlocked

0.902*

0.974*

0.979*

1.000*

0.959*

1.064**

1.008*

(2.27)

(2.49)

(2.49)

(2.48)

(2.39)

(2.68)

(2.54)

lnair1

0.0318*

0.0297*

0.0306*

0.0245

(2.14)

(2.03)

(2.07)

(1.79)

lnair2

0.338***

0.214*

(3.39)

(2.27)

lncontainer1

0.0207*

0.0150

0.0206*

0.0127

(2.47)

(1.93)

(2.42)

(1.59)

lncontainer2

1.444***

1.364***

(7.75)

(7.30)

_cons

-32.72***

-32.82***

-25.60***

-32.20***

-12.79***

-32.33***

-9.411*

(-12.72)

(-12.92)

(-7.68)

(-12.38)

(-3.55)

(-12.58)

(-2.39)

N

420

408

408

420

420

408

408