$25 I Bond with 0.00% Fixed Rate Purchased May 2015

 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
2015 25.00-0.80%0.00%25.0025.0025.0025.0025.0025.000.77%1.54%25.032015
201625.0625.1025.1325.1625.190.08%0.16%25.1925.2025.2025.2025.2125.211.38%2.76%25.272016
201725.3325.3825.4425.5025.560.98%1.96%25.6025.6425.6825.7325.7725.811.24%2.48%25.862017
201825.9225.9726.0226.0826.131.11%2.22%26.1826.2326.2726.3226.3726.42

From $25.00 to $26.42 over 3.5 years = 1.58% average annual increase compounded semi-annually.

Generated  05/01/18  10:11