Bitfinex, monthly trading volume data for the past year and fees volume

[GoncharPOTT]

Hello guys.
Please help me to solve a homework assigned to me by myself.
I'm trying to find out an answer to a very 'easy' question which is 'Is Bitfinex solvent?'
To find this out understanding what are Bitfinex incomes is very useful.
Page https://coinmarketcap.com/exchanges/volume/24-hour/ gives data about daily volume.
But what about Monthly Volume month by month?
How can we calculate total amount of fees collected by Bitfinex? Is it possible at all?
Any help would be greatly appreciated.