How many classical texts are there?

I've said this before, but we are sure lucky of having the wonderful texts from classical antiquity come down to us. But, lucky, by how much? How many texts do we have? Had I been asked this question not long ago I'd have guessed that maybe around 300, but now I see we much more than that.

Let's see:

Collection	Year Started	Published volumes	Language
Loeb Classical Library	1911	532	English	http://www.hup.harvard.edu/collection.php?cpk=1031
Collection des Universités de France (Collection Budé)	1920	>800	French	http://lesbelleslettres.giantchair.com/collections/?collection_id=17
Bibliotheca Teubneriana	1849	2009 (?!)	German	https://www.degruyter.com/view/serial/36366#
Biblioteca Clásica Gredos	1977	411+	Spanish	http://www.editorialgredos.com/biblioteca_clasica_gredos

There's usually some regret about how much we might have lost (eg from the Library of Alexandria), but I read somewhere that for the texts that were considered valuable, it was made sure to make copies out of them, so we can be confident that not only do we have hundreds of texts, but most belonging of the upper tiers as well.