Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.04328 -0.02324 -0.01415  0.00499  0.59032 

Coefficients:
              Estimate Std. Error t value        Pr(>|t|)    
(Intercept)   0.023246   0.003411   6.814 0.0000000000203 ***
xNA          -0.023204   0.012382  -1.874          0.0613 .  
xnon-Annex I  0.020037   0.004428   4.525 0.0000070666122 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.05708 on 709 degrees of freedom
Multiple R-squared:  0.03916,	Adjusted R-squared:  0.03645 
F-statistic: 14.45 on 2 and 709 DF,  p-value: 0.0000007082