Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.03797 -0.02855 -0.00366  0.00547  0.36545 

Coefficients:
              Estimate Std. Error t value Pr(>|t|)    
(Intercept)   0.003672   0.007511   0.489 0.625649    
xNA          -0.003656   0.047504  -0.077 0.938767    
xnon-Annex I  0.034300   0.008752   3.919 0.000136 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04691 on 146 degrees of freedom
Multiple R-squared:  0.09729,	Adjusted R-squared:  0.08493 
F-statistic: 7.868 on 2 and 146 DF,  p-value: 0.0005687