Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.14299 -0.07945 -0.00082 -0.00008  0.57536 

Coefficients:
                     Estimate Std. Error t value Pr(>|t|)    
(Intercept)          0.006051   0.035526   0.170 0.864805    
xCaribbean          -0.005214   0.043799  -0.119 0.905280    
xCentral America    -0.006019   0.041298  -0.146 0.884174    
xCentral Asia       -0.005948   0.055544  -0.107 0.914746    
xEastern Africa     -0.005849   0.040332  -0.145 0.884731    
xEastern Asia        0.003312   0.043510   0.076 0.939351    
xEastern Europe      0.118006   0.040893   2.886 0.004027 ** 
xMelanesia          -0.005809   0.048537  -0.120 0.904778    
xMicronesia         -0.005522   0.048537  -0.114 0.909450    
xMiddle Africa      -0.005231   0.050241  -0.104 0.917105    
xNA                  0.077640   0.044446   1.747 0.081108 .  
xNorthern Africa    -0.005886   0.053878  -0.109 0.913038    
xNorthern America   -0.004131   0.055544  -0.074 0.940736    
xNorthern Europe     0.087597   0.038304   2.287 0.022503 *  
xPolynesia          -0.005908   0.048537  -0.122 0.903151    
xSouth America      -0.004747   0.039502  -0.120 0.904390    
xSouth-Eastern Asia -0.005406   0.040435  -0.134 0.893677    
xSouthern Africa     0.006920   0.051277   0.135 0.892689    
xSouthern Asia      -0.005677   0.043241  -0.131 0.895594    
xSouthern Europe     0.136944   0.039572   3.461 0.000572 ***
xWestern Africa     -0.005971   0.040771  -0.146 0.883608    
xWestern Asia        0.037369   0.043241   0.864 0.387770    
xWestern Europe      0.088462   0.038408   2.303 0.021563 *  
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.1281 on 689 degrees of freedom
Multiple R-squared:  0.1476,	Adjusted R-squared:  0.1204 
F-statistic: 5.423 on 22 and 689 DF,  p-value: 0.00000000000005703