Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.03064 -0.03059 -0.00116 -0.00111  0.31888 

Coefficients:
               Estimate Std. Error t value            Pr(>|t|)    
(Intercept)   0.0011658  0.0028078   0.415               0.678    
xNA          -0.0005982  0.0101913  -0.059               0.953    
xnon-Annex I  0.0294749  0.0036444   8.088 0.00000000000000263 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04698 on 709 degrees of freedom
Multiple R-squared:  0.08835,	Adjusted R-squared:  0.08578 
F-statistic: 34.36 on 2 and 709 DF,  p-value: 0.000000000000005734