Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.252524 -0.032217 -0.001732  0.027489  0.248424 

Coefficients:
                    Estimate Std. Error t value       Pr(>|t|)    
(Intercept)          0.32191    0.04798   6.709 0.000000000596 ***
xCaribbean          -0.26275    0.05365  -4.898 0.000002913313 ***
xCentral America    -0.30145    0.05441  -5.541 0.000000168411 ***
xCentral Asia       -0.26797    0.06195  -4.326 0.000030615852 ***
xEastern Africa     -0.29824    0.05130  -5.814 0.000000047217 ***
xEastern Asia       -0.06935    0.05877  -1.180       0.240202    
xEastern Europe     -0.19601    0.05305  -3.695       0.000327 ***
xMelanesia          -0.24967    0.05877  -4.248 0.000041507555 ***
xMicronesia         -0.06908    0.06786  -1.018       0.310633    
xMiddle Africa      -0.31886    0.05541  -5.755 0.000000062297 ***
xNA                 -0.16852    0.08311  -2.028       0.044701 *  
xNorthern Africa    -0.31408    0.05877  -5.344 0.000000410734 ***
xNorthern America    0.09790    0.06786   1.443       0.151582    
xNorthern Europe    -0.17062    0.05256  -3.246       0.001500 ** 
xPolynesia          -0.31545    0.06786  -4.649 0.000008305451 ***
xSouth America      -0.30294    0.05441  -5.568 0.000000148466 ***
xSouth-Eastern Asia -0.24835    0.05365  -4.629 0.000008995537 ***
xSouthern Africa    -0.26371    0.06195  -4.257 0.000040124950 ***
xSouthern Asia      -0.24301    0.05541  -4.386 0.000024131791 ***
xSouthern Europe    -0.20770    0.05183  -4.007       0.000104 ***
xWestern Africa     -0.28704    0.05130  -5.596 0.000000130629 ***
xWestern Asia       -0.17527    0.05154  -3.401       0.000901 ***
xWestern Europe     -0.19202    0.05365  -3.579       0.000490 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.06786 on 126 degrees of freedom
Multiple R-squared:  0.6018,	Adjusted R-squared:  0.5323 
F-statistic: 8.655 on 22 and 126 DF,  p-value: 0.0000000000000002764