Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.05527 -0.04200 -0.00170 -0.00143  0.58437 

Coefficients:
               Estimate  Std. Error t value       Pr(>|t|)    
(Intercept)  0.00165624  0.00695783   0.238          0.812    
xAmericas    0.00004947  0.00974175   0.005          0.996    
xAsia        0.00129012  0.00961534   0.134          0.893    
xEurope      0.05361558  0.00835405   6.418 0.000000000253 ***
xOceania    -0.00022241  0.01222324  -0.018          0.985    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.07654 on 707 degrees of freedom
Multiple R-squared:  0.1035,	Adjusted R-squared:  0.09839 
F-statistic:  20.4 on 4 and 707 DF,  p-value: 0.0000000000000006432