This is because Member States do not systematically carry out the yearly reviews due to the administrative burden involved and the lack of appropriate resources.
Tarlaíonn sé seo toisc nach gcuireann na Ballstáit na hathbhreithnithe bliantúla i gcrích go córasach i ngeall ar an ualach riaracháin a bhíonn i gceist agus an easpa acmhainní iomchuí.