The difference when excluding exchange addresses is not significant. These are the addresses to exclude:
1DUb2YYbQA1jjaNYzVXLZ7ZioEhLXtbUru - 25,796,703 - Bittrx cold storage
1Po1oWkD2LmodfkBYiAktwh76vkF93LKnh - 10,762,473 - Poloniex cold storage
14quvdxXj7h4kcfhhuKX39wRc6X5sodkjM - 1,368,587 - Hitbtc cold storage
1K1wA1v9CwDY8LKjjHeDaUWCnfWBzuqLfg - 118,160 - Hitbtc hot storage
We could debate whether the Poloniex address represents a single entity or multiple ones, but I have excluded it in this case.
Looking at addresses with 10K+ coins in them, this accounts for 14.8% 14.8% of all addresses (2544/17211) (2540/17207) and 95.9% 95.5% of all maidsafecoin (433960716/452539928) (395914793/414494005).
