Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.027863 -0.012164 -0.012084 -0.000421  0.205523 

Coefficients:
              Estimate Std. Error t value             Pr(>|t|)    
(Intercept)   0.027864   0.001972  14.129 < 0.0000000000000002 ***
xNA          -0.018766   0.007158  -2.622              0.00894 ** 
xnon-Annex I -0.015697   0.002560  -6.133        0.00000000143 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.033 on 709 degrees of freedom
Multiple R-squared:  0.05269,	Adjusted R-squared:  0.05002 
F-statistic: 19.72 on 2 and 709 DF,  p-value: 0.00000000464