Now from this area I took a sample (pages 1-10), which is about 1% (300 members), out of these 300 members only 23 have posted (8%) and out of these 23 only two have posted more than 10 post (9%).
If we use these figures it will show that only 2,300 of the 30,000 members have posted, and of these 2,300 members that have posted only 200 of them have posted more than 10 posts.
Meaning that less than 1% (about .7%) of the members are regular posters