
Lyndon I think a number of Societies have a similar problem.
Loads of members and often only a small proportion turn up usually to a dealer dem. or a visitor from foreign shores .
There is no one answer. magicians are at times peculiar folk. Single/One minded and very much self centred; they'd make great actors!
I always felt I could write a series on Magician's Ego!
One of the big problems is passiveness. Lectures are placed continually in front of them; they sit back and listen and watch (we are in a TV & electronic age) but don't often absorb much. Over time this can get boring even to magicians who are passionate about our Art. Sometimes it must be a bit of a bind to turn out.
You've had a year off. That must have helped renew your batteries and sparked up your enthusiasm again. I always made a point in my Convention days to take a good 2 hours off from the magic throng; go sit by the sea; have a meal away from the magi. it always helped.
Make sure your Committe tries to get members to perfom more at meetings. How else are the Committee going to see who might have improved from those lectures. Check the Ring Reports at the back of The Linking Ring (IBM) magazine. See how often their members perform.
Get some actual workshops going. 99% of all magicians will perform at the drop of a hat. Give them the chance.
Encourage members to discuss the magic (I dare not say criticise constructively or you'll get, continually, "Now I do it this way"!!)
When I lectured to Blackool magicians Club I was impressed to see magicians, prior to my lecxture, up at the other end of then Club Room, showing moves & tricks to the others.
Make friends amongst the members.

Ring them up or e mail them and ask "Are you coming tonight/this week?" Talk about the next meeting to them at your meetings.
Try to put some of the Brotherhood back into magic.
Be Active Not Passive must be your War Cry!
There is no one answer.
Allen Tipton
Began magic at 9 in 1942. Joined Staffs M.S at 13. Nottm.Guild of M. (8 times President. Prog Director 20years)IBM. Awarded Magician of Month 1980 By Intern. Pres. IBM for reproducing Dante's Sim Sala Bim. Writes Dear Magician column for Abra. Mag.