Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.079043 -0.013085 -0.003561  0.003669  0.239096 

Coefficients:
                     Estimate Std. Error t value     Pr(>|t|)    
(Intercept)          0.009966   0.010319   0.966     0.334487    
xCaribbean           0.023578   0.012722   1.853     0.064263 .  
xCentral America     0.023644   0.011995   1.971     0.049107 *  
xCentral Asia        0.007662   0.016133   0.475     0.635008    
xEastern Africa      0.042862   0.011715   3.659     0.000273 ***
xEastern Asia        0.019512   0.012638   1.544     0.123071    
xEastern Europe     -0.005074   0.011878  -0.427     0.669404    
xMelanesia           0.010848   0.014098   0.769     0.441862    
xMicronesia          0.019202   0.014098   1.362     0.173644    
xMiddle Africa       0.012011   0.014593   0.823     0.410733    
xNA                 -0.007383   0.012910  -0.572     0.567589    
xNorthern Africa     0.069695   0.015649   4.454 0.0000098489 ***
xNorthern America   -0.003100   0.016133  -0.192     0.847678    
xNorthern Europe    -0.006641   0.011126  -0.597     0.550784    
xPolynesia           0.016167   0.014098   1.147     0.251887    
xSouth America       0.001754   0.011474   0.153     0.878535    
xSouth-Eastern Asia  0.066565   0.011745   5.668 0.0000000213 ***
xSouthern Africa     0.026849   0.014894   1.803     0.071871 .  
xSouthern Asia       0.069092   0.012560   5.501 0.0000000532 ***
xSouthern Europe    -0.002133   0.011494  -0.186     0.852842    
xWestern Africa      0.019099   0.011842   1.613     0.107246    
xWestern Asia        0.034439   0.012560   2.742     0.006263 ** 
xWestern Europe     -0.006400   0.011156  -0.574     0.566341    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.0372 on 689 degrees of freedom
Multiple R-squared:  0.3014,	Adjusted R-squared:  0.279 
F-statistic: 13.51 on 22 and 689 DF,  p-value: < 0.00000000000000022