Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.02120 -0.00942 -0.00935  0.00414  0.35141 

Coefficients:
              Estimate Std. Error t value             Pr(>|t|)    
(Intercept)   0.021202   0.001646  12.882 < 0.0000000000000002 ***
xNA          -0.012159   0.005974  -2.035               0.0422 *  
xnon-Annex I -0.011777   0.002136  -5.513         0.0000000494 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.02754 on 709 degrees of freedom
Multiple R-squared:  0.04212,	Adjusted R-squared:  0.03942 
F-statistic: 15.59 on 2 and 709 DF,  p-value: 0.000000237