Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.07045 -0.02926 -0.01088  0.01902  0.25735 

Coefficients:
                    Estimate Std. Error t value  Pr(>|t|)    
(Intercept)         0.002211   0.012075   0.183  0.854757    
xCaribbean          0.029275   0.014886   1.967  0.049636 *  
xCentral America    0.020319   0.014036   1.448  0.148179    
xCentral Asia       0.037927   0.018878   2.009  0.044925 *  
xEastern Africa     0.013500   0.013708   0.985  0.325067    
xEastern Asia       0.017105   0.014788   1.157  0.247813    
xEastern Europe     0.057027   0.013899   4.103 0.0000457 ***
xMelanesia          0.037491   0.016497   2.273  0.023356 *  
xMicronesia         0.068238   0.016497   4.136 0.0000396 ***
xMiddle Africa      0.035911   0.017076   2.103  0.035826 *  
xNA                 0.061921   0.015106   4.099 0.0000464 ***
xNorthern Africa    0.022224   0.018312   1.214  0.225309    
xNorthern America   0.009498   0.018878   0.503  0.615025    
xNorthern Europe    0.035380   0.013019   2.718  0.006740 ** 
xPolynesia          0.013047   0.016497   0.791  0.429305    
xSouth America      0.034200   0.013426   2.547  0.011072 *  
xSouth-Eastern Asia 0.008699   0.013743   0.633  0.526950    
xSouthern Africa    0.028135   0.017428   1.614  0.106906    
xSouthern Asia      0.031616   0.014697   2.151  0.031804 *  
xSouthern Europe    0.053574   0.013450   3.983 0.0000752 ***
xWestern Africa     0.023794   0.013857   1.717  0.086409 .  
xWestern Asia       0.033923   0.014697   2.308  0.021283 *  
xWestern Europe     0.049779   0.013054   3.813  0.000149 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04354 on 689 degrees of freedom
Multiple R-squared:  0.1284,	Adjusted R-squared:  0.1005 
F-statistic: 4.612 on 22 and 689 DF,  p-value: 0.00000000003198