$500 I Bond with 1.20% Fixed Rate Purchased May 2005

 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
2005 500.001.79%4.80%502.00504.00506.00508.00510.00512.002.85%6.93%515.002005
2006517.80520.80523.80526.80529.800.50%2.21%530.80531.80532.80533.60534.60535.601.55%4.32%537.602006
2007539.40541.40543.20545.20547.201.21%3.63%548.80550.40552.20553.80555.40557.201.53%4.28%559.202007
2008561.20563.20565.20567.20569.202.42%6.07%572.00575.00577.80580.60583.60586.402.46%6.15%589.402008
2009592.40595.40598.40601.40604.40-2.78%0.00%604.40604.40604.40604.40604.40604.401.53%4.28%606.602009
2010608.60610.80613.00615.20617.400.77%2.75%618.80620.20621.60623.00624.40625.800.37%1.94%626.802010
2011627.80628.80629.80630.80631.802.30%5.83%634.80637.80641.00644.00647.20650.201.53%4.28%652.402011
2012654.80657.20659.40661.80664.201.10%3.41%666.00668.00669.80671.80673.60675.600.88%2.97%677.202012
2013679.00680.60682.20684.00685.600.59%2.39%687.00688.40689.60691.00692.40693.800.59%2.39%695.202013
2014696.60698.00699.40700.80702.000.92%3.05%703.80705.60707.40709.20711.00712.800.74%2.69%714.402014
2015716.00717.60719.20720.80722.40-0.80%0.00%722.40722.40722.40722.40722.40722.400.77%2.75%724.002015
2016725.60727.40729.00730.60732.400.08%1.36%733.20734.00734.80735.80736.60737.401.38%3.98%739.802016
2017742.20744.80747.20749.60752.000.98%3.17%754.00756.00758.00760.00762.00764.001.24%3.69%766.402017
2018768.60771.00773.40775.80778.001.11%3.43%780.20782.40784.60786.80789.20791.401.16%3.53%793.802018
2019796.00798.40800.60803.00805.400.70%2.61%807.20808.80810.60812.40814.20816.001.01%3.23%818.202019
2020820.40822.60824.80827.00829.200.53%2.27%830.80832.40833.80835.40837.00838.600.84%2.89%840.602020
2021842.60844.60846.60848.60850.80

From $500.00 to $850.80 over 16.0 years = 3.35% average annual increase compounded semi-annually.

Generated  11/02/20  10:30