Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.19175 -0.01970 -0.00168 -0.00158  0.50753 

Coefficients:
             Estimate Std. Error t value            Pr(>|t|)    
(Intercept)  0.018443   0.005854   3.151              0.0017 ** 
xAmericas    0.001287   0.008196   0.157              0.8752    
xAsia        0.002675   0.008090   0.331              0.7410    
xEurope     -0.016761   0.007028  -2.385              0.0174 *  
xOceania     0.173307   0.010284  16.853 <0.0000000000000002 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.06439 on 707 degrees of freedom
Multiple R-squared:  0.3765,	Adjusted R-squared:  0.373 
F-statistic: 106.7 on 4 and 707 DF,  p-value: < 0.00000000000000022