54However, according to the settled case-law of the Court, it is for the competent national authorities, where they adopt a measure derogating from a principle enshrined by European Union Law, to show in each individual case that that measure is appropriate for securing the attainment of the objective relied upon and does not go beyond what is necessary to attain it. The reasons invoked by a Member State by way of justification must thus be accompanied by an analysis of the appropriateness and proportionality of the measure adopted by that State and by specific evidence substantiating its arguments. Such an objective, detailed analysis, supported by figures, must be capable of demonstrating, with solid and consistent data, that there are genuine risks to the balance of the social security system (see, in particular, judgments in Commission v Belgium, C‑254/05, EU:C:2007:319, paragraph 36, and Bressol and Others, C‑73/08, EU:C:2010:181, paragraph 71).
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