Macroeconomic factor

Coefficient

Std. Error

t value

Pr (>|t|)

Intercept

4.501

0.462

9.744

1.69e−15***

Gross Product Domestic Growth (GDP)

0.335

0.068

4.937

3.91e−06***

Exchange rate (ER)

0.140

0.011

12.378

<2e−16***

R

R²

p-value

0.667

0.659

<2.2e−16