> Since everyone... Me too! First i really want to see the chart from 1900-1949. The chart as displayed seems cherry picked to support OA's theory. But, the a

> Since everyone... Me too! First i really want to see the chart from 1900-1949. The chart as displayed seems cherry picked to support OA's theory. But, the answer is in the title Post War. WWII and few years after was time of supreme tech advancement and very austere public sector investment. I can imagine it taking 20 years to capitalize on that.