$500 I Bond with 1.00% Fixed Rate Purchased September 2004

 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
2004 500.001.19%3.39%501.40502.80504.202004
2005505.60507.00508.401.33%3.67%510.00511.40513.00514.60516.20517.801.79%4.60%519.80521.80523.802005
2006525.80527.80529.802.85%6.73%532.80535.60538.60541.60544.60547.600.50%2.01%548.60549.40550.402006
2007551.20552.20553.201.55%4.12%555.00557.00558.80560.80562.60564.601.21%3.43%566.20567.80569.402007
2008571.00572.60574.201.53%4.08%576.20578.00580.00582.00584.00586.002.42%5.86%588.80591.60594.602008
2009597.40600.20603.202.46%5.94%606.20609.20612.00615.00618.00621.20-2.78%0.00%621.20621.20621.202009
2010621.20621.20621.201.53%4.08%623.20625.40627.60629.60631.80633.800.77%2.55%635.20636.40637.802010
2011639.20640.60641.800.37%1.74%642.80643.60644.60645.60646.40647.402.30%5.62%650.40653.40656.402011
2012659.40662.60665.601.53%4.08%667.80670.00672.40674.60676.80679.201.10%3.21%681.00682.80684.602012
2013686.40688.20690.200.88%2.77%691.80693.40695.00696.60698.20699.800.59%2.19%701.00702.40703.602013
2014704.80706.20707.400.59%2.19%708.60710.00711.20712.60713.80715.200.92%2.85%716.80718.60720.202014
2015722.00723.60725.400.74%2.49%726.80728.40730.00731.40733.00734.40-0.80%0.00%734.40734.40734.402015
2016734.40734.40734.400.77%2.55%736.00737.60739.00740.60742.20743.800.08%1.16%744.60745.20746.002016
2017746.60747.40748.201.38%3.77%750.60752.80755.20757.60760.00762.400.98%2.97%764.20766.20768.002017
2018770.00771.80773.801.24%3.49%776.00778.20780.60782.80785.00787.401.11%3.23%789.60791.60793.802018
2019795.80798.00800.201.16%3.33%802.40804.60806.80809.00811.20813.600.70%2.41%815.20816.80818.402019
2020820.20821.80823.401.01%3.03%825.40827.60829.60831.60833.80835.800.53%2.07%837.20838.60840.202020
2021841.60843.00844.40

From $500.00 to $844.40 over 16.5 years = 3.20% average annual increase compounded semi-annually.

Generated  05/01/20  10:18