Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.03824 -0.03787 -0.01147 -0.00458  0.46021 

Coefficients:
              Estimate Std. Error t value             Pr(>|t|)    
(Intercept)   0.038239   0.003493  10.947 < 0.0000000000000002 ***
xNA          -0.001657   0.012679  -0.131                0.896    
xnon-Annex I -0.026765   0.004534  -5.903        0.00000000552 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.05845 on 709 degrees of freedom
Multiple R-squared:  0.04854,	Adjusted R-squared:  0.04585 
F-statistic: 18.08 on 2 and 709 DF,  p-value: 0.00000002186