Some numbers from the council of Europe.
http://website-pace.net/documents/10643/1127812/EDOC_Social+services+in+Europe.pdf/dc06054e-2051-49f5-bfbd-31c9c0144a32

of of the Uk cases
http://www.dailymail.co.uk/news/article-2516270/Please-dont-baby-Agony-mother-baby-girl-adoption-secret-court-judge-forced-caesarean.html