Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.02231 -0.01782 -0.00996  0.00277  0.43706 

Coefficients:
             Estimate Std. Error t value        Pr(>|t|)    
(Intercept)  0.020615   0.003045   6.770 0.0000000000271 ***
xAmericas   -0.000825   0.004263  -0.194         0.84662    
xAsia        0.001702   0.004208   0.404         0.68609    
xEurope     -0.010640   0.003656  -2.910         0.00373 ** 
xOceania    -0.006006   0.005350  -1.123         0.26189    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.0335 on 707 degrees of freedom
Multiple R-squared:  0.02426,	Adjusted R-squared:  0.01874 
F-statistic: 4.395 on 4 and 707 DF,  p-value: 0.001624