The Premier League has published details of its clubs' payments to agents from the period of 1 October 2014 to 30 September 2015.
During this period a total of £129.86million was spent by the 20 present Premier League clubs on agents. The amounts shown include payments made by clubs on behalf of players.
Liverpool paid  £14.3m in agents’ fees to go top of Premier League Agent Fees table for the year. table, Manchester United were second in table at £13.8m, with Manchester City third
Premier League clubs paid out £130m in total - an increase of £15m. Arsenal spent £7.6m more on agent fees in this year’s two transfer windows than they had done in 2014, with Manchester United’s outlay also rising nearly £6m during the same period. Arsenal’s £11.9m and United’s £13.9m spend for the January and summer windows of 2015 contributed to the total of £129.9m paid out by the 20 Premier League clubs. This was an increase of nearly £15m from the total that went to player representatives in the January and summer windows of 2014. Promoted Watford paid £1.6m to agents in the summer. 
The Premier League agreed in June 2008 that from season 2009/10 onwards each club, on 30 November each season, would publish the total amount they paid to authorised agents during the period 1 October of the previous year to 30 September of that year (encompassing the two transfer windows).
The definition of an "agent", as in rule A.1.9 of the Premier League Handbook, means "any Person who qualifies as an Intermediary for the purposes of the FA Regulations on Working with Intermediaries as they may be amended from time to time".
During this period (1 October 2014 to 30 September 2015) there were:
172 inbound transfers and loans in the Premier League
542 new or updated contracts (includes scholars getting first professional contracts) in the Premier League
573 outbound transfers and loans in the Premier League

Fees paid to agents by Clubs to facilitate the outward transfer of Player Registrations. Player Registrations (transactions) include:

• Domestic permanent transfers.
• International permanent transfers.
• Domestic temporary transfers (loans).
• International temporary transfers (loans).
• Extension of existing Player Contracts.
• First professional registration.
• Free transfers.

You can compare each years agent fees from 2008  in the Agent Fee comparison table from The Agent Fee Table in the Site Menu above