Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.072525 -0.019842 -0.001210 -0.000213  0.282766 

Coefficients:
                      Estimate Std. Error t value   Pr(>|t|)    
(Intercept)          0.0042844  0.0122618   0.349   0.726887    
xCaribbean           0.0227961  0.0151174   1.508   0.132028    
xCentral America    -0.0001238  0.0142541  -0.009   0.993072    
xCentral Asia        0.0050112  0.0191710   0.261   0.793867    
xEastern Africa      0.0624667  0.0139208   4.487 0.00000845 ***
xEastern Asia       -0.0036659  0.0150176  -0.244   0.807222    
xEastern Europe     -0.0031152  0.0141144  -0.221   0.825381    
xMelanesia           0.0235931  0.0167528   1.408   0.159492    
xMicronesia          0.0180147  0.0167528   1.075   0.282606    
xMiddle Africa       0.0466150  0.0173408   2.688   0.007358 ** 
xNA                 -0.0037168  0.0153406  -0.242   0.808630    
xNorthern Africa     0.0682426  0.0185960   3.670   0.000262 ***
xNorthern America   -0.0042756  0.0191710  -0.223   0.823584    
xNorthern Europe    -0.0040664  0.0132206  -0.308   0.758493    
xPolynesia           0.0369240  0.0167528   2.204   0.027851 *  
xSouth America       0.0004430  0.0136342   0.032   0.974090    
xSouth-Eastern Asia  0.0184139  0.0139562   1.319   0.187470    
xSouthern Africa     0.0181419  0.0176984   1.025   0.305695    
xSouthern Asia       0.0559871  0.0149246   3.751   0.000191 ***
xSouthern Europe    -0.0023571  0.0136583  -0.173   0.863032    
xWestern Africa      0.0479054  0.0140721   3.404   0.000702 ***
xWestern Asia        0.0162296  0.0149246   1.087   0.277223    
xWestern Europe     -0.0030719  0.0132566  -0.232   0.816818    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04421 on 689 degrees of freedom
Multiple R-squared:  0.2156,	Adjusted R-squared:  0.1905 
F-statistic: 8.607 on 22 and 689 DF,  p-value: < 0.00000000000000022