$25 I Bond with 1.20% Fixed Rate Purchased October 2005

 Jan
1
Feb
1
Mar
1
Apr
1
Infla
tion
Rate
Com
posite
Rate
May
1
Jun
1
Jul
1
Aug
1
Sep
1
Oct
1
Infla
tion
Rate
Com
posite
Rate
Nov
1
Dec
1
2005 25.001.79%4.80%25.1025.202005
200625.3025.4025.5025.602.85%6.93%25.7525.8926.0426.1926.3426.490.50%2.21%26.5426.592006
200726.6426.6826.7326.781.55%4.32%26.8826.9727.0727.1627.2627.361.21%3.63%27.4427.522007
200827.6127.6927.7727.861.53%4.28%27.9628.0628.1628.2628.3628.462.42%6.07%28.6028.752008
200928.8929.0329.1829.322.46%6.15%29.4729.6229.7729.9230.0730.22-2.78%0.00%30.2230.222009
201030.2230.2230.2230.221.53%4.28%30.3330.4330.5430.6530.7630.870.77%2.75%30.9431.012010
201131.0831.1531.2231.290.37%1.94%31.3431.3931.4431.4931.5431.592.30%5.83%31.7431.892011
201232.0532.2032.3632.511.53%4.28%32.6232.7432.8632.9733.0933.211.10%3.41%33.3033.402012
201333.4933.5933.6833.780.88%2.97%33.8633.9534.0334.1134.2034.280.59%2.39%34.3534.422013
201434.4834.5534.6234.690.59%2.39%34.7634.8334.9034.9735.0435.100.92%3.05%35.1935.282014
201535.3735.4635.5535.640.74%2.69%35.7235.8035.8835.9636.0436.12-0.80%0.00%36.1236.122015
201636.1236.1236.1236.120.77%2.75%36.2036.2836.3736.4536.5336.620.08%1.36%36.6636.702016
201736.7436.7936.8336.871.38%3.98%36.9937.1137.2437.3637.4837.600.98%3.17%37.7037.802017
201837.9038.0038.1038.20

From $25.00 to $38.20 over 12.5 years = 3.42% average annual increase compounded semi-annually.

Generated  05/01/17  10:10