Call:
lm(formula = y ~ x)

Residuals:
      Min        1Q    Median        3Q       Max 
-0.039439 -0.024221 -0.006446  0.002361  0.276186 

Coefficients:
              Estimate Std. Error t value             Pr(>|t|)    
(Intercept)   0.006453   0.002430   2.656              0.00809 ** 
xNA          -0.003870   0.008819  -0.439              0.66090    
xnon-Annex I  0.032987   0.003154  10.460 < 0.0000000000000002 ***
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04066 on 709 degrees of freedom
Multiple R-squared:  0.1415,	Adjusted R-squared:  0.139 
F-statistic: 58.41 on 2 and 709 DF,  p-value: < 0.00000000000000022