This seems a bit odd to me as my understanding was that mn get 45% of the reward.
However this reward seems to change and reduce overall over time.
Apprently it has to do with difficulty.... im not sure if any of the below is accurate.
https://www.dash.org/forum/threads/total-dash-per-day-reward.14973/
Link:
Interesting - though the difficulty went down. So it can't be the main reason I guess. But I look into it.

https://www.google.com/amp/s/amp.reddit.com/r/dashpay/comments/3ypi4i/i_am_confused_about_the_mining_reward/
So apparently the payout per block is determined by the difficulty in a way that if more people mine less is paid. So somehow there must have been an influx of mining.... but it does seem rather high.
I am guessing there has to be some form of asics or miners switching over due to asics.
Congratulations! Your submission earned you 2.769 STEEM from this bounty. You have received 2.769 STEEM from the creator of the bounty and 0.000 STEEM from the community!