Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.21436 -0.04614 -0.00902  0.03503  0.39567 

Coefficients:
                      Estimate Std. Error t value  Pr(>|t|)    
(Intercept)          0.0164593  0.0661106   0.249  0.803792    
xCaribbean           0.1621095  0.0739139   2.193  0.030127 *  
xCentral America     0.1822372  0.0749624   2.431  0.016462 *  
xCentral Asia        0.2840937  0.0853484   3.329  0.001145 ** 
xEastern Africa      0.2469608  0.0706752   3.494  0.000657 ***
xEastern Asia        0.1471622  0.0809686   1.818  0.071513 .  
xEastern Europe      0.0481942  0.0730880   0.659  0.510843    
xMelanesia           0.2612401  0.0809686   3.226  0.001597 ** 
xMicronesia          0.1810001  0.0934945   1.936  0.055114 .  
xMiddle Africa       0.2217352  0.0763379   2.905  0.004343 ** 
xNA                  0.0037809  0.1145069   0.033  0.973712    
xNorthern Africa     0.2877987  0.0809686   3.554  0.000534 ***
xNorthern America    0.0122857  0.0934945   0.131  0.895664    
xNorthern Europe     0.0079991  0.0724205   0.110  0.912225    
xPolynesia           0.0437462  0.0934945   0.468  0.640663    
xSouth America       0.1138666  0.0749624   1.519  0.131272    
xSouth-Eastern Asia  0.3078520  0.0739139   4.165 0.0000573 ***
xSouthern Africa     0.2205606  0.0853484   2.584  0.010899 *  
xSouthern Asia       0.2437070  0.0763379   3.192  0.001781 ** 
xSouthern Europe     0.0463042  0.0714076   0.648  0.517874    
xWestern Africa      0.1904340  0.0706752   2.694  0.008011 ** 
xWestern Asia        0.1784449  0.0710142   2.513  0.013240 *  
xWestern Europe     -0.0003946  0.0739139  -0.005  0.995748    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.09349 on 126 degrees of freedom
Multiple R-squared:  0.5582,	Adjusted R-squared:  0.481 
F-statistic: 7.236 on 22 and 126 DF,  p-value: 0.00000000000009284