A survey among the group's 16 founder properties found that 4,000 conferences were booked in 1990, attracting 90,000 delegates.

COP15 attracted 33,200 delegates, the side event was attended by 60 people (15 journalists, 18 speakers, 27 audience).

The first national convention, attracting 89 delegates from 23 states, was held that June in Denver, Colorado.

The first Roadshow, held in October, attracted more than 400 delegates.

The 1999 pageant attracted 94 delegates from all over the world.

Conferences in the 2000s attracted 500-800 delegates.

The Summit was estimated to attract about 200 delegates from around the world.

They organize 1,500 international meetings, which attracted more than 81,000 delegates last year.

The convention, according to its organizers - a loose collective of politicians, writers and activists - attracted 600 delegates and 2,300 others from 33 states.

The conference now attracts 150 to 200 registered delegates every year with around 150 refereed papers presented.