I didn't include YOU'RE SPECIAL, Happy Jack, in my reckoning as he was one none of us seemed able to confirm. Sadly, yes, GREEN TANGO was included after a rather protracted period while one of us tried to find out his fate. Your remarks make it all the sadder that he was put at obstacles again. Leaving off the 'unconfirmed' went for about a further four, where details never emerged formally or otherwise.
I think we can probably estimate that a few lesser lights went at home, so I would think that a total would be nearer to 230 - Venusian's quote of Cole Morton in the Indie on Sunday last June of 180 dying every year as a result of 'racecourse accidents' is probably about right, with a number of other Horses in Training cracking up on the gallops at home, or dying from racing-related problems (viz KALMINI).
Given that HiT lists c.17,000 horses, give or take a hundred or two, and while it lists some French trainers it doesn't list ALL of the UK ones (some prefer not to appear in the august tome), it's probably not a lot different if you took 17,000 humans engaged regularly in high-risk work, where I wouldn't be surprised if they suffered similar accidents. The difference being we can usually mend the humans, but not the horses.
Let's hope for more sense and sensibility in 2007, especially at Cheltenham.