Yes, but if you look at the chart, most of the loss occurred in the decade of the 70s, before any talk of trickle down economics. From the end of the 82 recessi

Yes, but if you look at the chart, most of the loss occurred in the decade of the 70s, before any talk of trickle down economics. From the end of the 82 recession until the mid nineties the erosion continues, but at a much slower pace, closer to being static until the trend starts a long slow ascent, close to 25 years to recover what was mostly lost in 10.