38Furthermore, it has been held that the organisations involved in the management of the public social security system fulfil an exclusively social function. That activity is based on the principle of national solidarity and is entirely non-profit-making. The benefits paid are statutory benefits bearing no relation to the amount of the contributions (see, to that effect, judgment in Poucet and Pistre, C‑159/91 and C‑160/91, EU:C:1993:63, paragraph 18).
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