Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.026392 -0.020740 -0.004900  0.004081  0.242146 

Coefficients:
              Estimate Std. Error t value Pr(>|t|)    
(Intercept)   0.004916   0.005462   0.900 0.369611    
xNA          -0.004900   0.034548  -0.142 0.887417    
xnon-Annex I  0.021478   0.006365   3.374 0.000948 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.03411 on 146 degrees of freedom
Multiple R-squared:  0.0745,	Adjusted R-squared:  0.06182 
F-statistic: 5.876 on 2 and 146 DF,  p-value: 0.003511