Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.04582 -0.04471 -0.02871  0.01448  0.40107 

Coefficients:
              Estimate Std. Error t value            Pr(>|t|)    
(Intercept)   0.045826   0.004112  11.145 <0.0000000000000002 ***
xNA          -0.030471   0.014924  -2.042              0.0415 *  
xnon-Annex I -0.001115   0.005337  -0.209              0.8345    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.0688 on 709 degrees of freedom
Multiple R-squared:  0.005919,	Adjusted R-squared:  0.003115 
F-statistic: 2.111 on 2 and 709 DF,  p-value: 0.1219