That's an extremely deceptive or very stupid way to use the data.
The recession's happened when it was at it's highest NOT because it was at it's highest, but because when wealth is destroyed it usually is disproportionately destroyed at the top. You've got your causation wrong. It's not the highness that causes the crash. It's that the crash causes the number to shrink aftewords!
Additionally, you're using decades long data and ignore the more local trends.
Instead I would suggest looking within decades which is a much better way to look at the data as it cuts back on extranious values. (Like say, huge industrial revolution, being the sole economic super power.....)








