$25 I Bond with 3.40% Fixed Rate Purchased September 1998

 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
1998 25.000.62%4.66%25.1025.1925.291998
199925.3925.4825.580.86%5.15%25.6925.8025.9126.0226.1326.240.86%5.15%26.3526.4626.581999
200026.6926.8026.921.76%6.98%27.0727.2327.3927.5427.7027.861.91%7.28%28.0328.1928.362000
200128.5328.7028.871.52%6.49%29.0229.1829.3329.4929.6529.811.44%6.33%29.9730.1230.282001
200230.4430.5930.751.19%5.82%30.9031.0531.1931.3431.4931.640.28%3.97%31.7431.8531.952002
200332.0632.1632.271.23%5.90%32.4332.5832.7432.9033.0633.221.77%7.00%33.4133.6033.802003
200433.9934.1934.380.54%4.50%34.5134.6434.7634.8935.0235.151.19%5.82%35.3235.4935.662004
200535.8336.0036.171.33%6.11%36.3536.5336.7236.9037.0937.271.79%7.04%37.4937.7037.922005
200638.1438.3638.582.85%9.20%38.8739.1639.4639.7540.0540.350.50%4.42%40.5040.6540.792006
200740.9441.0941.241.55%6.55%41.4641.6941.9142.1442.3642.591.21%5.86%42.8043.0043.212007
200843.4243.6343.841.53%6.51%44.0744.3144.5544.7945.0345.272.42%8.32%45.5845.8946.202008
200946.5246.8347.152.46%8.40%47.4747.8048.1348.4648.7949.13-2.78%0.00%49.1349.1349.132009
201049.1349.1349.131.53%6.51%49.3949.6649.9250.1950.4650.730.77%4.97%50.9451.1551.362010
201151.5751.7851.990.37%4.15%52.1752.3552.5352.7152.8953.072.30%8.08%53.4253.7854.132011
201254.4954.8555.211.53%6.51%55.5155.8056.1056.4056.7057.011.10%5.64%57.2757.5457.812012
201358.0858.3558.620.88%5.19%58.8759.1259.3859.6359.8860.140.59%4.60%60.3760.6060.832013
201461.0661.2961.520.59%4.60%61.7561.9962.2262.4662.7062.930.92%5.27%63.2063.4863.752014
201564.0364.3164.590.74%4.91%64.8565.1165.3865.6465.9166.18-0.80%1.77%66.2866.3766.472015
201666.5766.6766.770.77%4.97%67.0467.3267.5967.8768.1568.430.08%3.56%68.6368.8369.042016
201769.2469.4469.651.38%6.21%70.0170.3670.7271.0871.4571.810.98%5.39%72.1372.4572.772017
201873.0973.4273.75

From $25.00 to $73.75 over 19.5 years = 5.63% average annual increase compounded semi-annually.

Generated  05/01/17  10:11