Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.06350 -0.01592 -0.00791  0.00134  0.42798 

Coefficients:
                      Estimate Std. Error t value Pr(>|t|)    
(Intercept)          0.0081145  0.0091568   0.886 0.375838    
xCaribbean           0.0078227  0.0112893   0.693 0.488586    
xCentral America     0.0226734  0.0106446   2.130 0.033522 *  
xCentral Asia        0.0554001  0.0143165   3.870 0.000119 ***
xEastern Africa      0.0137051  0.0103957   1.318 0.187827    
xEastern Asia        0.0003221  0.0112148   0.029 0.977098    
xEastern Europe      0.0094476  0.0105403   0.896 0.370392    
xMelanesia           0.0060210  0.0125106   0.481 0.630478    
xMicronesia          0.0081519  0.0125106   0.652 0.514879    
xMiddle Africa       0.0239262  0.0129497   1.848 0.065086 .  
xNA                 -0.0078352  0.0114560  -0.684 0.494245    
xNorthern Africa     0.0077954  0.0138870   0.561 0.574748    
xNorthern America   -0.0080829  0.0143165  -0.565 0.572537    
xNorthern Europe    -0.0004250  0.0098728  -0.043 0.965676    
xPolynesia           0.0109354  0.0125106   0.874 0.382375    
xSouth America       0.0092603  0.0101817   0.910 0.363401    
xSouth-Eastern Asia  0.0117199  0.0104221   1.125 0.261182    
xSouthern Africa    -0.0002032  0.0132168  -0.015 0.987740    
xSouthern Asia       0.0088005  0.0111453   0.790 0.430027    
xSouthern Europe     0.0012078  0.0101997   0.118 0.905771    
xWestern Africa      0.0124200  0.0105087   1.182 0.237663    
xWestern Asia        0.0232791  0.0111453   2.089 0.037102 *  
xWestern Europe      0.0036455  0.0098997   0.368 0.712801    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.03302 on 689 degrees of freedom
Multiple R-squared:  0.07618,	Adjusted R-squared:  0.04668 
F-statistic: 2.583 on 22 and 689 DF,  p-value: 0.0001048