Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.02253 -0.01929 -0.01288  0.00275  0.54034 

Coefficients:
                Estimate   Std. Error t value   Pr(>|t|)    
(Intercept)  0.019306553  0.003973294   4.859 0.00000145 ***
xAmericas    0.003228411  0.005563062   0.580      0.562    
xAsia       -0.003551867  0.005490877  -0.647      0.518    
xEurope      0.003055229  0.004770611   0.640      0.522    
xOceania    -0.000002158  0.006980125   0.000      1.000    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04371 on 707 degrees of freedom
Multiple R-squared:  0.003478,	Adjusted R-squared:  -0.00216 
F-statistic: 0.6168 on 4 and 707 DF,  p-value: 0.6507