Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.02794 -0.01176 -0.00510  0.00425  0.34303 

Coefficients:
                    Estimate Std. Error t value Pr(>|t|)   
(Intercept)         0.002016   0.007556   0.267  0.78966   
xCaribbean          0.003681   0.009315   0.395  0.69283   
xCentral America    0.005662   0.008783   0.645  0.51940   
xCentral Asia       0.004252   0.011813   0.360  0.71903   
xEastern Africa     0.003001   0.008578   0.350  0.72659   
xEastern Asia       0.017343   0.009254   1.874  0.06132 . 
xEastern Europe     0.008933   0.008697   1.027  0.30472   
xMelanesia          0.006720   0.010323   0.651  0.51526   
xMicronesia         0.001105   0.010323   0.107  0.91478   
xMiddle Africa      0.008365   0.010685   0.783  0.43397   
xNA                 0.007027   0.009453   0.743  0.45749   
xNorthern Africa    0.006426   0.011459   0.561  0.57515   
xNorthern America   0.014416   0.011813   1.220  0.22273   
xNorthern Europe    0.023889   0.008146   2.932  0.00347 **
xPolynesia          0.004159   0.010323   0.403  0.68716   
xSouth America      0.015796   0.008401   1.880  0.06050 . 
xSouth-Eastern Asia 0.010022   0.008600   1.165  0.24424   
xSouthern Africa    0.001190   0.010906   0.109  0.91316   
xSouthern Asia      0.002767   0.009196   0.301  0.76356   
xSouthern Europe    0.017177   0.008416   2.041  0.04163 * 
xWestern Africa     0.003508   0.008671   0.405  0.68590   
xWestern Asia       0.009612   0.009196   1.045  0.29632   
xWestern Europe     0.025921   0.008169   3.173  0.00157 **
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.02724 on 689 degrees of freedom
Multiple R-squared:  0.08919,	Adjusted R-squared:  0.06011 
F-statistic: 3.067 on 22 and 689 DF,  p-value: 0.000003562