Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.064433 -0.021333 -0.004509  0.012521  0.100437 

Coefficients:
                    Estimate Std. Error t value Pr(>|t|)   
(Intercept)         0.009596   0.024644   0.389  0.69765   
xCaribbean          0.046746   0.027553   1.697  0.09224 . 
xCentral America    0.031474   0.027943   1.126  0.26216   
xCentral Asia       0.042416   0.031815   1.333  0.18487   
xEastern Africa     0.019758   0.026345   0.750  0.45468   
xEastern Asia       0.040892   0.030182   1.355  0.17789   
xEastern Europe     0.024625   0.027245   0.904  0.36780   
xMelanesia          0.035566   0.030182   1.178  0.24087   
xMicronesia         0.007626   0.034852   0.219  0.82714   
xMiddle Africa      0.036669   0.028456   1.289  0.19990   
xNA                 0.032160   0.042684   0.753  0.45259   
xNorthern Africa    0.054842   0.030182   1.817  0.07159 . 
xNorthern America   0.019910   0.034852   0.571  0.56883   
xNorthern Europe    0.019639   0.026996   0.727  0.46828   
xPolynesia          0.036640   0.034852   1.051  0.29512   
xSouth America      0.032539   0.027943   1.164  0.24643   
xSouth-Eastern Asia 0.035675   0.027553   1.295  0.19776   
xSouthern Africa    0.022923   0.031815   0.721  0.47254   
xSouthern Asia      0.078371   0.028456   2.754  0.00676 **
xSouthern Europe    0.045317   0.026618   1.702  0.09113 . 
xWestern Africa     0.054047   0.026345   2.051  0.04229 * 
xWestern Asia       0.055306   0.026472   2.089  0.03870 * 
xWestern Europe     0.036985   0.027553   1.342  0.18190   
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.03485 on 126 degrees of freedom
Multiple R-squared:  0.1908,	Adjusted R-squared:  0.04955 
F-statistic: 1.351 on 22 and 126 DF,  p-value: 0.1527