Horsechit!!
We had this crap knocked back in the late 80's/early 90's (does that really qualify as "decades"?).
Then along came the Clintons and it's been downhill ever since.
With obunghole & company kickin and pushin things to the edge.
News Flash
Question: How long is a decade? 10 years A decade is a period of 10 years. The word is derived (via French and Latin) from the Ancient Greek dekas which means ten. First Source
How long is a decade? In a decade there is 10 years.Second Source
Q: How long is a decade?
A: Quick Answer A decade is a period of 10 years. The word "decade" originates from the Greek word "dekas," which means a group of 10. The word "decade" began to be used in English to mean a period of 10 years in 1590. Third Source
Decade
Simple Definition of decade : a period of 10 years; especially : a 10-year period beginning with a year ending in 0Fourth Source
There are many more. Perhaps you are confusing Decades with Generations. A Generation is about 25 years.