Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.14560 -0.04414 -0.01973 -0.01866  0.67403 

Coefficients:
              Estimate Std. Error t value            Pr(>|t|)    
(Intercept)   0.049970   0.006308   7.922 0.00000000000000903 ***
xNA           0.095639   0.022894   4.177 0.00003315315789000 ***
xnon-Annex I -0.030235   0.008187  -3.693            0.000239 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.1055 on 709 degrees of freedom
Multiple R-squared:  0.05267,	Adjusted R-squared:  0.04999 
F-statistic: 19.71 on 2 and 709 DF,  p-value: 0.00000000468