Chair of the council: Gender balance - Find a freedom of information request

Please could you advise me on how many male elected members have held the position of Mayor or Chair of the council, and how many female elected members have held the position of Mayor or Chair of the council since records began.

Since Lincolnshire County Council was established in 1974 there have been 28 male elected members and four female elected members holding the position of Chair of the council.

Please note some members have served multiple terms.