$25 I Bond with 3.30% Fixed Rate Purchased November 1998

 Jan
1
Feb
1
Mar
1
Apr
1
May
1
Infla
tion
Rate
Com
posite
Rate
Jun
1
Jul
1
Aug
1
Sep
1
Oct
1
Nov
1
Infla
tion
Rate
Com
posite
Rate
Dec
1
1998 25.000.86%5.05%25.101998
199925.2125.3125.4225.5225.630.86%5.05%25.7425.8425.9526.0626.1726.281.76%6.88%26.431999
200026.5826.7326.8827.0327.181.91%7.18%27.3427.5027.6627.8327.9928.161.52%6.39%28.312000
200128.4628.6128.7628.9129.061.44%6.23%29.2129.3629.5129.6629.8129.971.19%5.72%30.112001
200230.2530.4030.5430.6830.830.28%3.87%30.9331.0331.1331.2331.3331.431.23%5.80%31.582002
200331.7331.8832.0332.1932.341.77%6.90%32.5232.7132.8933.0833.2733.460.54%4.40%33.582003
200433.7033.8333.9534.0734.201.19%5.72%34.3634.5234.6934.8535.0135.181.33%6.00%35.352004
200535.5335.7035.8836.0636.241.79%6.94%36.4536.6536.8637.0737.2837.502.85%9.09%37.782005
200638.0638.3438.6338.9239.200.50%4.32%39.3439.4839.6239.7639.9040.051.55%6.45%40.262006
200740.4840.6940.9141.1241.341.21%5.76%41.5441.7341.9342.1342.3342.531.53%6.41%42.752007
200842.9843.2143.4343.6643.892.42%8.22%44.1944.4844.7845.0845.3945.692.46%8.30%46.002008
200946.3146.6346.9547.2647.59-2.78%0.00%47.5947.5947.5947.5947.5947.591.53%6.41%47.842009
201048.0948.3548.6048.8649.120.77%4.87%49.3249.5249.7149.9150.1150.320.37%4.05%50.492010
201150.6650.8351.0051.1751.342.30%7.98%51.6852.0152.3552.7053.0453.391.53%6.41%53.672011
201253.9554.2454.5254.8155.101.10%5.54%55.3555.6055.8656.1156.3756.630.88%5.09%56.872012
201357.1157.3557.5957.8358.070.59%4.50%58.2958.5058.7258.9459.1659.380.59%4.50%59.602013
201459.8260.0460.2760.4960.720.92%5.17%60.9861.2461.5061.7662.0362.290.74%4.80%62.542014
201562.7863.0363.2863.5363.78-0.80%1.67%63.8763.9664.0564.1364.2264.310.77%4.87%64.572015
201664.8365.0965.3565.6165.880.08%3.46%66.0766.2666.4566.6466.8367.021.38%6.11%67.362016
201767.7068.0468.3868.7269.070.98%5.29%69.3769.6769.9870.2870.5970.90

From $25.00 to $70.90 over 19.0 years = 5.56% average annual increase compounded semi-annually.

Generated  05/01/17  10:10