The number of people who celebrate their birthday on 29 February 2020 is including all persons residing in the Netherlands on 1 January 2020 and born on 29 February. Their country of birth may be the Netherlands but it may also be elsewhere. Therefore, the number of birthday celebrants on 29 February 2020 does not correspond exactly with the number of births on 29 February; the births only concern those who were born in the Netherlands.
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