Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.033427 -0.019073 -0.009516  0.009484  0.297184 

Coefficients:
              Estimate Std. Error t value    Pr(>|t|)    
(Intercept)  0.0157448  0.0031253   5.038 0.000000598 ***
xAmericas    0.0009052  0.0043757   0.207      0.8362    
xAsia        0.0101774  0.0043189   2.356      0.0187 *  
xEurope      0.0176836  0.0037524   4.713 0.000002946 ***
xOceania    -0.0018456  0.0054903  -0.336      0.7368    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.03438 on 707 degrees of freedom
Multiple R-squared:  0.05182,	Adjusted R-squared:  0.04646 
F-statistic:  9.66 on 4 and 707 DF,  p-value: 0.0000001308