The suicide rate in the US is about 13 per 100,000 people per year, with the rate for men being higher than for women. I would say I know about 500 JWs in my circle of JW friends and acquaintances. These are people I know by name, who have been to my home for meals, we've talked at the KH, etc. So the way I see it, I would expect about 0.065 (13/100,000 * 500) of my JW friends to die by suicide in a given year. Another way to look at it, I might expect to see 1 suicide in about 15 years among my JW friends.
Just this week I saw the fifth suicide in only 10 years. Four men and one woman.
At least from my perspective, the rate of suicide among JWs is much higher than the general population.