Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.02155 -0.01233 -0.00586  0.00408  0.34850 

Coefficients:
             Estimate Std. Error t value    Pr(>|t|)    
(Intercept)  0.005869   0.002494   2.353      0.0189 *  
xAmericas    0.006465   0.003492   1.852      0.0645 .  
xAsia        0.005654   0.003446   1.641      0.1013    
xEurope      0.015686   0.002994   5.239 0.000000214 ***
xOceania    -0.000753   0.004381  -0.172      0.8636    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.02743 on 707 degrees of freedom
Multiple R-squared:  0.05234,	Adjusted R-squared:  0.04697 
F-statistic: 9.761 on 4 and 707 DF,  p-value: 0.000000109