Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.034859 -0.006750 -0.001894 -0.000035  0.182796 

Coefficients:
                      Estimate Std. Error t value     Pr(>|t|)    
(Intercept)          0.0012390  0.0049084   0.252     0.800786    
xCaribbean           0.0336364  0.0060514   5.558 0.0000000389 ***
xCentral America     0.0196739  0.0057059   3.448     0.000599 ***
xCentral Asia       -0.0009086  0.0076741  -0.118     0.905790    
xEastern Africa      0.0110011  0.0055724   1.974     0.048758 *  
xEastern Asia       -0.0011971  0.0060115  -0.199     0.842213    
xEastern Europe     -0.0005792  0.0056500  -0.103     0.918383    
xMelanesia           0.0101398  0.0067061   1.512     0.130987    
xMicronesia          0.0042967  0.0067061   0.641     0.521917    
xMiddle Africa       0.0089706  0.0069415   1.292     0.196680    
xNA                 -0.0011225  0.0061408  -0.183     0.855015    
xNorthern Africa     0.0193116  0.0074439   2.594     0.009680 ** 
xNorthern America    0.0133802  0.0076741   1.744     0.081683 .  
xNorthern Europe     0.0002431  0.0052922   0.046     0.963378    
xPolynesia           0.0051585  0.0067061   0.769     0.442026    
xSouth America       0.0167037  0.0054577   3.061     0.002295 ** 
xSouth-Eastern Asia  0.0072584  0.0055866   1.299     0.194292    
xSouthern Africa     0.0053938  0.0070846   0.761     0.446712    
xSouthern Asia       0.0182101  0.0059743   3.048     0.002391 ** 
xSouthern Europe     0.0008711  0.0054674   0.159     0.873457    
xWestern Africa      0.0093780  0.0056330   1.665     0.096401 .  
xWestern Asia        0.0046874  0.0059743   0.785     0.432956    
xWestern Europe      0.0023528  0.0053066   0.443     0.657630    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.0177 on 689 degrees of freedom
Multiple R-squared:  0.187,	Adjusted R-squared:  0.161 
F-statistic: 7.203 on 22 and 689 DF,  p-value: < 0.00000000000000022