Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.04028 -0.02254 -0.01880  0.01603  0.23726 

Coefficients:
              Estimate Std. Error t value          Pr(>|t|)    
(Intercept)   0.020393   0.002654   7.683 0.000000000000052 ***
xNA          -0.009392   0.009634  -0.975              0.33    
xnon-Annex I  0.019890   0.003445   5.773 0.000000011619672 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04442 on 709 degrees of freedom
Multiple R-squared:  0.05138,	Adjusted R-squared:  0.04871 
F-statistic:  19.2 on 2 and 709 DF,  p-value: 0.000000007569