Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.063936 -0.019497 -0.002437  0.004281  0.168786 

Coefficients:
             Estimate Std. Error t value            Pr(>|t|)    
(Intercept)  0.063938   0.002778   23.02 <0.0000000000000002 ***
xAmericas   -0.044332   0.003889  -11.40 <0.0000000000000002 ***
xAsia       -0.039293   0.003838  -10.24 <0.0000000000000002 ***
xEurope     -0.061496   0.003335  -18.44 <0.0000000000000002 ***
xOceania    -0.051514   0.004880  -10.56 <0.0000000000000002 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.03055 on 707 degrees of freedom
Multiple R-squared:  0.3291,	Adjusted R-squared:  0.3253 
F-statistic: 86.69 on 4 and 707 DF,  p-value: < 0.00000000000000022