Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.05520 -0.01776 -0.01160  0.00311  0.54188 

Coefficients:
              Estimate Std. Error t value            Pr(>|t|)    
(Intercept)   0.021365   0.002583   8.272 0.00000000000000065 ***
xNA           0.033846   0.009374   3.610            0.000327 ***
xnon-Annex I -0.003601   0.003352  -1.074            0.283080    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04322 on 709 degrees of freedom
Multiple R-squared:  0.02286,	Adjusted R-squared:  0.0201 
F-statistic: 8.292 on 2 and 709 DF,  p-value: 0.0002757