Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.056194 -0.024276 -0.001001 -0.000970  0.293321 

Coefficients:
             Estimate Std. Error t value             Pr(>|t|)    
(Intercept)  0.056196   0.004105  13.689 < 0.0000000000000002 ***
xAmericas   -0.047536   0.005748  -8.270 0.000000000000000662 ***
xAsia       -0.031536   0.005673  -5.559 0.000000038515786432 ***
xEurope     -0.055193   0.004929 -11.198 < 0.0000000000000002 ***
xOceania    -0.031601   0.007212  -4.382 0.000013555444556179 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04516 on 707 degrees of freedom
Multiple R-squared:  0.1602,	Adjusted R-squared:  0.1555 
F-statistic: 33.73 on 4 and 707 DF,  p-value: < 0.00000000000000022