This number is fairly inaccurate since it represent reported cases of missing children. In my country there was an affair of "stolen babies" where 1500 families claim that their children were taken on their birth. The children would be healthy upon birth and then separated from their mothers for "additional tests".

Then after a few hours the nurses or the doctors would tell parents that their baby didn't survive. When parents tried to deny it they would tell parents that it is normal to deny such things in a state of shock.... And so the babies went missing (not only in my country).

The whole affair was exposed when some of lost children reunited with their parents who took DNA tests and spoke to the media houses. The sad things is that this affair lasted for decades (and maybe it still happens) ...