Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.06196 -0.02071 -0.00505  0.01743  0.12850 

Coefficients:
             Estimate Std. Error t value             Pr(>|t|)    
(Intercept)  0.076121   0.005606  13.578 < 0.0000000000000002 ***
xAmericas   -0.036131   0.009226  -3.916             0.000138 ***
xAsia       -0.033564   0.008326  -4.031          0.000089654 ***
xEurope     -0.042896   0.007978  -5.377          0.000000299 ***
xOceania    -0.016726   0.012660  -1.321             0.188545    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.0359 on 144 degrees of freedom
Multiple R-squared:  0.1931,	Adjusted R-squared:  0.1707 
F-statistic: 8.614 on 4 and 144 DF,  p-value: 0.000002916