Are you saying it was unusually volatile in 1995? Using your own numbers:
70-82, 600-1000... 67% swings in 12 years (4.35%/yr avg)
82-87, 1000-2000... 100% swing in 5 years (14.87%/yr avg)
88-95, 2000-3800... 90% swing in 7 years (9.6%/yr avg)
1995, 3800-5100... 34% in one year
Do you know the number of times the DOW has been up by more than 30% in one year over the last 80 years? Six.
In fact, there was one year when it was up 66.78%... 1933.
Not too terribly out of whack, really...
It is better seen on a graph, like the Dow graph on google finance. Take it out to max1970 and you’ll see the steep increases start in 1995 that I see.