It also depends on how long your quotes are; some people may have 4 word quotes, which in that case, they may have more 'quotes', but for people who have 10 word quotes (just an hypothetical example), they may not have as many.
Is 20 to 30 say for 1984 a good number for now - I am gonna categorise it into themes and then later on I am going to see were I can add up on for the individual themes in terms of quote numbers (my quotes range from 6 to 10 words)