Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.185043 -0.048879 -0.007869  0.029006  0.270343 

Coefficients:
                    Estimate Std. Error t value Pr(>|t|)    
(Intercept)         0.023938   0.056238   0.426 0.671083    
xCaribbean          0.050564   0.062876   0.804 0.422804    
xCentral America    0.091773   0.063768   1.439 0.152582    
xCentral Asia       0.101685   0.072603   1.401 0.163804    
xEastern Africa     0.077863   0.060121   1.295 0.197653    
xEastern Asia       0.087703   0.068878   1.273 0.205251    
xEastern Europe     0.012351   0.062174   0.199 0.842856    
xMelanesia          0.057950   0.068878   0.841 0.401747    
xMicronesia         0.050047   0.079533   0.629 0.530317    
xMiddle Africa      0.117038   0.064938   1.802 0.073889 .  
xNA                 0.017851   0.097408   0.183 0.854892    
xNorthern Africa    0.249920   0.068878   3.628 0.000413 ***
xNorthern America   0.047436   0.079533   0.596 0.551957    
xNorthern Europe    0.009963   0.061606   0.162 0.871784    
xPolynesia          0.076411   0.079533   0.961 0.338517    
xSouth America      0.082520   0.063768   1.294 0.198013    
xSouth-Eastern Asia 0.096737   0.062876   1.539 0.126428    
xSouthern Africa    0.096402   0.072603   1.328 0.186648    
xSouthern Asia      0.171252   0.064938   2.637 0.009413 ** 
xSouthern Europe    0.066730   0.060744   1.099 0.274064    
xWestern Africa     0.177219   0.060121   2.948 0.003816 ** 
xWestern Asia       0.095924   0.060410   1.588 0.114818    
xWestern Europe     0.031012   0.062876   0.493 0.622713    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.07953 on 126 degrees of freedom
Multiple R-squared:  0.3616,	Adjusted R-squared:  0.2502 
F-statistic: 3.244 on 22 and 126 DF,  p-value: 0.00001695