The NHS data has many drawbacks, but still it is one of the best tools of capturing immigration to Canada. One has to pay attention to the following issues: 1) the definition of nationality of immigrant through the country of birth. This may be problematic as many of today immigrants coming from the EU have been born outside of their country of EU passport: either coming from another EU country or from outside of the EU, but naturalized. 2) The data also does not capture all EU-28 but shows the top source countries. 3) the data shows only permanent immigrants who immigrated to Canada prior to 2011.