Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.021935 -0.007979 -0.001961 -0.000798  0.178802 

Coefficients:
             Estimate Std. Error t value         Pr(>|t|)    
(Intercept)  0.011603   0.001638   7.084 0.00000000000339 ***
xAmericas    0.010334   0.002293   4.506 0.00000771143735 ***
xAsia       -0.003610   0.002263  -1.595           0.1112    
xEurope     -0.009639   0.001967  -4.901 0.00000118193187 ***
xOceania    -0.005296   0.002877  -1.841           0.0661 .  
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.01802 on 707 degrees of freedom
Multiple R-squared:  0.1353,	Adjusted R-squared:  0.1305 
F-statistic: 27.67 on 4 and 707 DF,  p-value: < 0.00000000000000022