The following yields on U.S. Treasury securities were taken from The Wall Street Journal in September 1999:

TERM ________________ RATE

6 months........................ 5.1%

1 year.............................. 5.5

2 years............................. 5.6

3 years............................. 5.7

4 years............................. 5.8

5 years............................. 6.0

10 years........................... 6.1

20 years........................... 6.5

30 years........................... 6.3

Plot a yield curve based on these data.