What does IMDB statistics and demographics tell us about the audience for your chosen film?

The film I have chosed in Goodfellas (1990) including Robert De Niro.
The dominant users for a website (in this case, IMDB) are Males aged 18-29 and this is proven in the statistics and demographics for Goodfellas. The main user rating reports are from Men. 176,657 men voted and 16,997 women, and out of the 176,657 men who voted, 106,241 were aged 18-29.