Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.10396 -0.03977 -0.02767  0.02568  0.38960 

Coefficients:
            Estimate Std. Error t value             Pr(>|t|)    
(Intercept)  0.11721    0.01119  10.477 < 0.0000000000000002 ***
xAmericas   -0.06313    0.01841  -3.429              0.00079 ***
xAsia       -0.03570    0.01662  -2.148              0.03335 *  
xEurope     -0.06749    0.01592  -4.239            0.0000399 ***
xOceania    -0.03534    0.02526  -1.399              0.16401    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.07163 on 144 degrees of freedom
Multiple R-squared:  0.1289,	Adjusted R-squared:  0.1047 
F-statistic: 5.325 on 4 and 144 DF,  p-value: 0.0004991