Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.05061 -0.02937 -0.01302  0.02061  0.26407 

Coefficients:
             Estimate Std. Error t value      Pr(>|t|)    
(Intercept) 0.0237793  0.0040421   5.883 0.00000000622 ***
xAmericas   0.0058140  0.0056593   1.027         0.305    
xAsia       0.0005248  0.0055859   0.094         0.925    
xEurope     0.0268320  0.0048532   5.529 0.00000004541 ***
xOceania    0.0091497  0.0071009   1.289         0.198    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04446 on 707 degrees of freedom
Multiple R-squared:  0.06707,	Adjusted R-squared:  0.06179 
F-statistic: 12.71 on 4 and 707 DF,  p-value: 0.000000000543