If you can find x <b>reasons</b> for x different ways of slicing the data, you will gain some insight about the possible catalysts that seemed to intrigue you.Quote from BlueHorseshoe:
A pie can be sliced a million ways, no great insight there.
While these 10 year and 18 year charts only address a period with falling rates, I've found the general shape to still be informative:
http://www.spectrumcommodities.com/...y/charts/ty.htm