Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.05456 -0.04190 -0.00170 -0.00165  0.58508 

Coefficients:
              Estimate Std. Error t value             Pr(>|t|)    
(Intercept)   0.054560   0.004570  11.939 < 0.0000000000000002 ***
xNA          -0.051898   0.016586  -3.129              0.00183 ** 
xnon-Annex I -0.052856   0.005931  -8.912 < 0.0000000000000002 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.07647 on 709 degrees of freedom
Multiple R-squared:  0.1026,	Adjusted R-squared:    0.1 
F-statistic: 40.51 on 2 and 709 DF,  p-value: < 0.00000000000000022