Welcome to all the newbies, like candyseaching and aquittal, it is great to see some many coming here.
Like blondie said, if you dont report for 6 months you are inactive, if you miss one month you are irregular. However the figure i used were just the gross totals in the report from one service year to the next, so doesnt really follow the definition. The figures supplied by the WTS is just based on how many reports they receive each month. It probably includes many reports from people that dont witness but dont want to get in trouble, like i did for several years. Likewise some people go to meetings but dont report.
I do think though that the report is interesting to watch as the number of 6 million is statistically large enough to have relevance to at least show constant patterns. Off the top of my head in 2004 (or it may have been 2003) there were 27 countries with 0 or negative growth. In 2005 it had grown to about 80. That shows a very negative trend for the organisation.
The 85000 that got d/f includes a large proportion of fornicators. However I imagine the other 90000 that have stopped reporting includes a large number of apostates, faders, those that have trouble with their faith etc.
Aquittal - In my congregation there were once 28 regular pioneers, most raised as JWs. A lot of them hated witnessing, so would turn up for field service, go out for an hour then claim to be going on calls, but really just went home.
If you stick around JWD for a while you will get a lot of relief. Within six months of leaving I am the happiest and calmest I can remember being in my life. For the first time i feel like life has meaning.