'Full scale in tmap so to not confuse when comparing two maps

Is it possible to easily edit the maps to that the values in the scales are equal? With the pictures of the two maps produces with the code you can see that although there has been an increase in the values between the maps, the colors indicate otherwise without reading the numbers. Therefore, I want to have the same scale on the map. For instance, using a scale from 0-1 or 0.3-1 for both maps.

My code

tm_shape(EU_and_educ0713, bbox = euro) +
  tm_polygons("Education 07-13", id = "NUTS_ID", palette = "Reds") +
  tm_text("NUTS_ID", remove.overlap = TRUE, size = 0.3) 
tm_shape(EU_and_educ1319, bbox = euro) +
  tm_polygons("Education 13-19", id = "NUTS_ID", palette = "Reds") +
  tm_text("NUTS_ID", remove.overlap = TRUE, size = 0.3)

With data from 07-13 With data from 13-19

leafletsftmap


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