$50 I Bond with 2.00% Fixed Rate Purchased September 2002

 Jan
1
Feb
1
Mar
1
Infla
tion
Rate
Com
posite
Rate
Apr
1
May
1
Jun
1
Jul
1
Aug
1
Sep
1
Infla
tion
Rate
Com
posite
Rate
Oct
1
Nov
1
Dec
1
2002 50.000.28%2.57%50.1050.2250.322002
200350.4250.5450.641.23%4.48%50.8251.0251.2051.4051.5851.781.77%5.58%52.0252.2652.502003
200452.7452.9853.220.54%3.09%53.3653.5053.6253.7653.9054.041.19%4.40%54.2454.4454.642004
200554.8255.0255.221.33%4.69%55.4455.6455.8656.0856.3056.521.79%5.62%56.7857.0457.302005
200657.5857.8458.102.85%7.76%58.4658.8459.2259.6059.9860.360.50%3.01%60.5260.6660.822006
200760.9661.1261.261.55%5.13%61.5261.7862.0462.3062.5662.841.21%4.44%63.0863.3063.542007
200863.7664.0064.241.53%5.09%64.5064.7865.0665.3265.6065.882.42%6.89%66.2666.6267.002008
200967.3867.7668.142.46%6.97%68.5468.9269.3269.7270.1270.52-2.78%0.00%70.5270.5270.522009
201070.5270.5270.521.53%5.09%70.8271.1271.4271.7272.0272.320.77%3.56%72.5472.7472.962010
201173.1873.4073.600.37%2.75%73.7673.9474.1074.2874.4474.622.30%6.65%75.0275.4475.862011
201276.2676.6877.101.53%5.09%77.4277.7478.0878.4078.7479.061.10%4.22%79.3479.6279.882012
201380.1680.4480.720.88%3.78%80.9881.2281.4881.7481.9882.240.59%3.19%82.4682.6882.902013
201483.1283.3483.56

From $50.00 to $83.56 over 11.5 years = 4.52% average annual increase compounded semi-annually.

Generated  04/16/13  22:22