Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.03777 -0.03417 -0.00136 -0.00131  0.52692 

Coefficients:
              Estimate Std. Error t value             Pr(>|t|)    
(Intercept)   0.037771   0.003617  10.444 < 0.0000000000000002 ***
xNA          -0.037740   0.013127  -2.875              0.00416 ** 
xnon-Annex I -0.036407   0.004694  -7.756   0.0000000000000305 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.06052 on 709 degrees of freedom
Multiple R-squared:  0.0801,	Adjusted R-squared:  0.07751 
F-statistic: 30.87 on 2 and 709 DF,  p-value: 0.0000000000001398