Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.03880 -0.03879 -0.00069 -0.00068  0.50974 

Coefficients:
               Estimate Std. Error t value       Pr(>|t|)    
(Intercept)   0.0006950  0.0046898   0.148          0.882    
xNA          -0.0004578  0.0170222  -0.027          0.979    
xnon-Annex I  0.0381095  0.0060870   6.261 0.000000000664 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.07848 on 709 degrees of freedom
Multiple R-squared:  0.05482,	Adjusted R-squared:  0.05215 
F-statistic: 20.56 on 2 and 709 DF,  p-value: 0.000000002088