One of its members was Thomas Jefferson, a lawyer from Virginia. He had been a leader in Virginia, and Virginia had elected him to the Continental Congress. The others on the committee were too busy with the revolution to work on the declaration, so Jefferson wrote it alone. He finished the document in a week.
The time frame is in weeks, so it shows the average bull market cycle is 155 weeks or about 39 months. The average bear market is about 17 months, which actually matches the most recent bear market from October 2007 to March 2009 (17 months). A full market cycle is 56 months.
The average bull market rally since 2009 has lasted 99 calendar days and has seen the market rise by 18.8%. By contrast our current rally, which started in mid November, is just 75 days old and has charted a 10.9% rise.