Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.17717 -0.00885 -0.00885  0.00365  0.39620 

Coefficients:
              Estimate Std. Error t value            Pr(>|t|)    
(Intercept)   0.072769   0.003469   20.98 <0.0000000000000002 ***
xNA           0.165623   0.012592   13.15 <0.0000000000000002 ***
xnon-Annex I -0.063916   0.004503  -14.20 <0.0000000000000002 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.05805 on 709 degrees of freedom
Multiple R-squared:  0.4013,	Adjusted R-squared:  0.3996 
F-statistic: 237.6 on 2 and 709 DF,  p-value: < 0.00000000000000022