Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.06540 -0.05134 -0.02600 -0.00198  0.62836 

Coefficients:
            Estimate Std. Error t value     Pr(>|t|)    
(Intercept) 0.001988   0.009600   0.207       0.8360    
xAmericas   0.024021   0.013441   1.787       0.0743 .  
xAsia       0.025499   0.013267   1.922       0.0550 .  
xEurope     0.063414   0.011527   5.502 0.0000000527 ***
xOceania    0.003517   0.016865   0.209       0.8349    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.1056 on 707 degrees of freedom
Multiple R-squared:  0.05433,	Adjusted R-squared:  0.04898 
F-statistic: 10.15 on 4 and 707 DF,  p-value: 0.00000005371