15. Assume that interest rates on federal government bonds are as follows:

1-year 6.5%

2-year 6.3%

3-year 6.0%

4-year 5.8%

5-year 5.5%

10-year 5.2%

15-year 5.0%

20-year 5.0%

Do the theories of the shape of the yield curve offer any insights into this rate pattern? Discuss the expectations, liquidity preference, and market segmentation theories separately.