Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.02140 -0.01941 -0.00989  0.00208  0.43797 

Coefficients:
              Estimate Std. Error t value    Pr(>|t|)    
(Intercept)   0.009910   0.001988   4.984 0.000000785 ***
xNA          -0.009631   0.007217  -1.334       0.183    
xnon-Annex I  0.011495   0.002581   4.454 0.000009788 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.03327 on 709 degrees of freedom
Multiple R-squared:  0.03443,	Adjusted R-squared:  0.03171 
F-statistic: 12.64 on 2 and 709 DF,  p-value: 0.000004034