I've deleted this twice because I've screwed it up twice in the poll itself. I am hoping I can get this right. Below is the background once more: Looking at GDP data from 1950-2010, expressed in constant dollars, and looking back in 30 year chunks, you get a multiplier effect of various sizes. From 1950-1979, the economy grew by a factor of 2.9. From 1981 to 2010, the economy grew by a factor of 2.2 (the lowest multiplier.) This means that the GDP in 2010 is worth 2.2 times what it was worth in 1981, in constant dollars. I plotted 1980-2009, 1979-2008, and so on all the way back to 1979, the first year it's possible to do this with the available data. There is a general downward trend in these 30 year chunks, though the multiplier declined really steeply from about 2004-2010. 2009 and 2010 yield almost identical multipliers, the lowest in the range. The highest was the 1950-1979 result of about 2.9. A multiplier of 2.5 is about average. The question is: what is the multiplier will we grow by between 2010 and 2029?