Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.18575 -0.01648 -0.01112  0.00949  0.36475 

Coefficients:
             Estimate Std. Error t value             Pr(>|t|)    
(Intercept)  0.016520   0.011377   1.452                0.149    
xAmericas    0.169231   0.018724   9.038 0.000000000000000969 ***
xAsia       -0.003168   0.016898  -0.188                0.852    
xEurope      0.000908   0.016190   0.056                0.955    
xOceania    -0.016447   0.025693  -0.640                0.523    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.07285 on 144 degrees of freedom
Multiple R-squared:  0.4366,	Adjusted R-squared:  0.4209 
F-statistic:  27.9 on 4 and 144 DF,  p-value: < 0.00000000000000022