This is the way the world ends, not with a bang but a whimper

Trend for peak performance

 

1950: 24.0%

1959: 16.6% (9 years)

1984: 11.3% (25 years)

1997:  7.8% (13 years)

2010:  6.3% (13 years)

2021:  4.7% (11 years)