Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.151316 -0.041280 -0.007867  0.027841  0.184538 

Coefficients:
                        Estimate   Std. Error t value Pr(>|t|)    
(Intercept)          0.000011039  0.047781288   0.000 0.999816    
xCaribbean           0.055914411  0.053421104   1.047 0.297254    
xCentral America     0.085856899  0.054178888   1.585 0.115543    
xCentral Asia        0.103391822  0.061685378   1.676 0.096195 .  
xEastern Africa      0.110878437  0.051080345   2.171 0.031831 *  
xEastern Asia        0.104437504  0.058519887   1.785 0.076725 .  
xEastern Europe      0.022998777  0.052824201   0.435 0.664029    
xMelanesia           0.149372601  0.058519887   2.553 0.011889 *  
xMicronesia          0.151377223  0.067572946   2.240 0.026830 *  
xMiddle Africa       0.094518533  0.055173079   1.713 0.089149 .  
xNA                  0.000005524  0.082759618   0.000 0.999947    
xNorthern Africa     0.197996376  0.058519887   3.383 0.000954 ***
xNorthern America   -0.000001148  0.067572946   0.000 0.999986    
xNorthern Europe     0.005035229  0.052341779   0.096 0.923515    
xPolynesia           0.014095072  0.067572946   0.209 0.835105    
xSouth America       0.046250713  0.054178888   0.854 0.394910    
xSouth-Eastern Asia  0.165271381  0.053421104   3.094 0.002435 ** 
xSouthern Africa     0.138503928  0.061685378   2.245 0.026490 *  
xSouthern Asia       0.134976500  0.055173079   2.446 0.015808 *  
xSouthern Europe     0.009333543  0.051609690   0.181 0.856777    
xWestern Africa      0.080704526  0.051080345   1.580 0.116625    
xWestern Asia        0.083623628  0.051325337   1.629 0.105750    
xWestern Europe      0.000882492  0.053421104   0.017 0.986846    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.06757 on 126 degrees of freedom
Multiple R-squared:  0.4304,	Adjusted R-squared:  0.331 
F-statistic: 4.328 on 22 and 126 DF,  p-value: 0.00000006751