Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.02907 -0.02529 -0.01852  0.00902  0.48731 

Coefficients:
              Estimate Std. Error t value            Pr(>|t|)    
(Intercept)   0.025291   0.002979   8.489 <0.0000000000000002 ***
xNA          -0.011356   0.010813  -1.050               0.294    
xnon-Annex I  0.003785   0.003867   0.979               0.328    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04985 on 709 degrees of freedom
Multiple R-squared:  0.003675,	Adjusted R-squared:  0.0008649 
F-statistic: 1.308 on 2 and 709 DF,  p-value: 0.2711