$50 I Bond with 1.20% Fixed Rate Purchased January 2008

 Jan
1
Infla
tion
Rate
Com
posite
Rate
Feb
1
Mar
1
Apr
1
May
1
Jun
1
Jul
1
Infla
tion
Rate
Com
posite
Rate
Aug
1
Sep
1
Oct
1
Nov
1
Dec
1
200850.001.53%4.28%50.1850.3650.5450.7250.9051.082.42%6.07%51.3451.6051.8452.1052.362008
200952.642.46%6.15%52.9053.1853.4453.7253.9854.26-2.78%0.00%54.2654.2654.2654.2654.262009
201054.261.53%4.28%54.4654.6454.8455.0455.2255.420.77%2.75%55.5455.6855.8055.9256.062010
201156.180.37%1.94%56.2856.3656.4656.5456.6456.722.30%5.83%57.0057.2657.5457.8258.102011
201258.381.53%4.28%58.5858.8059.0059.2059.4259.621.10%3.41%59.7859.9660.1260.3060.462012
201360.640.88%2.97%60.7860.9461.0861.2461.3861.540.59%2.39%61.6661.7861.9062.0262.162013
201462.280.59%2.39%62.4062.5262.6662.7862.9063.020.92%3.05%63.1863.3463.5063.6663.822014
201563.980.74%2.69%64.1264.2664.4064.5664.7064.84-0.80%0.00%64.8464.8464.8464.8464.842015
201664.840.77%2.75%64.9865.1465.2865.4465.5865.740.08%1.36%65.8265.8865.9666.0466.122016
201766.181.38%3.98%66.4066.6266.8467.0667.2867.500.98%3.17%67.6867.8668.0468.2268.402017
201868.561.24%3.69%68.7668.9869.1869.4069.6269.821.11%3.43%70.0270.2270.4270.6270.822018
201971.02

From $50.00 to $71.02 over 11.0 years = 3.22% average annual increase compounded semi-annually.

Generated  05/01/18  10:10