On March 9, 2009 the Dow Jones Industrial Average (DJIA) closed at 6,547.05.在2009年3月9日，道瓊斯工業平均指數（DJIA）收於6,547.05。
Yesterday, November 10, 2009, the DJIA closed at 10,246.97.昨天，2009年11月10日，道指收於10,246.97。 [1] [1]
This rise represents a simple return of approximately 56.51%.這是一個簡單的增長回報約56.51％。
On an annualized compounded basis the return is approximately 93.86%.再加上一年度的基礎上回報約為93.86％。 [2] [2]
If the DJIA continues to rise at this rate then on this day next year it should open at approximately 19,864.98.如果道指繼續上升，這速度，然後在明年的這一天應該開放約為19,864.98。
Just thought you may want to know.只是覺得你可能想知道。
PS: After reading some inane comments I just had to write a postscript. 西蒙茲：在閱讀一些空洞的意見 ， 我只是寫了後記。 There is a point to this post: the rate is unsustainable. 有一點是這一職務：這個比率是不可持續的。 I thought that was obvious. 我認為這是顯而易見的。 Some people apparently didn't. 有些人顯然沒有。 Unbelievable. No wonder bubbles happen. 令人難以置信的。難怪氣泡發生。
[1] [1] From Yahoo Finance historical price database.從雅虎財經歷史價格數據庫。
[2] [2] See看見 http://en.wikipedia.org/wiki/Compound_interest http://en.wikipedia.org/wiki/Compound_interest . 。 I used the 3rd version of the simplified calculation and solved for i.我使用的第3版的簡化計算和解決了島 There are 247 calendar days between 3/9/09 & 11/10/09 including the last day.還有247天之間09/03/09和11/10/09包括最後一天。 See看見 http://www.timeanddate.com/date/duration.html http://www.timeanddate.com/date/duration.html
