Here's some interesting numbers regarding yearly earnings starting at $10,000 x 10 x 10 x 10.
In 1937 Harry "Lighthorse" Cooper breaks the $10,000 barrier winning $14,138.
In 1963, 36 years later, Arnold Palmer wins 10 times more breaking through the $100,000 barrier winning $128,230.
In 1988, 25 year later, Curtis Strange breaks the $1,000,000 mark.
In 2004, only 16 years after Strange's $1 million season, Vijay Singh has won more than $10,000,000.
According to my calculations, in 2011, someone on the PGA Tour will win $100,000,000 in a season. Sounds crazy, but based on the 10 factor, it will happen.