Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.03844 -0.03433 -0.02607 -0.01276  0.68960 

Coefficients:
              Estimate Std. Error t value        Pr(>|t|)    
(Intercept)   0.038443   0.005792   6.638 0.0000000000633 ***
xNA          -0.030452   0.021021  -1.449           0.148    
xnon-Annex I -0.012358   0.007517  -1.644           0.101    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.09691 on 709 degrees of freedom
Multiple R-squared:  0.005567,	Adjusted R-squared:  0.002762 
F-statistic: 1.985 on 2 and 709 DF,  p-value: 0.1382