11 March 2010
You are asking for the moon. Illegitimacy is a secret and shy-off affair of a man and a woman. Declaration about illegitimacy would not come forth publicly and as I know, no census is carried out for such a statistics.
17 March 2010
However, all disputes settled out of Paternity and Maternity tests can be published for statistical purpose. Then even Illegitimacy can be legitimized. There are many case laws to support my version