29As regards proportionality, the Court recalls that, according the case-law of the Court, that principle requires that measures adopted by European Union institutions do not exceed the limits of what is appropriate and necessary in order to attain the objectives legitimately pursued by the legislation in question, it being understood that, when there is a choice between several appropriate measures recourse must be had to the least onerous, and the disadvantages caused must not be disproportionate to the aims pursued (Case C-343/09 Afton Chemical [2010] ECR I-7027, paragraph 45, and Joined Cases C‑581/10 and C‑629/10 Nelson and Others [2012] ECR, paragraph 71 and Sky Österreich, paragraph 50).
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