$500 I Bond with 0.70% Fixed Rate Purchased March 2009

 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
2009 500.002.46%5.64%502.40504.60507.00509.40511.80514.20-2.78%0.00%514.20514.20514.202009
2010514.20514.20514.201.53%3.77%515.80517.40519.00520.60522.20523.800.77%2.25%524.80525.80526.802010
2011527.80528.80529.600.37%1.44%530.20530.80531.60532.20532.80533.402.30%5.32%535.80538.00540.402011
2012542.80545.20547.601.53%3.77%549.40551.00552.80554.40556.20558.001.10%2.91%559.40560.60562.002012
2013563.40564.80566.200.88%2.47%567.40568.60569.60570.80572.00573.200.59%1.88%574.00575.00575.802013
2014576.80577.60578.600.59%1.88%579.60580.40581.40582.20583.20584.000.92%2.55%585.20586.40587.802014
2015589.00590.20591.400.74%2.19%592.40593.60594.60595.80596.80597.80-0.80%0.00%597.80597.80597.802015
2016597.80597.80597.800.77%2.25%599.00600.00601.20602.20603.40604.600.08%0.86%605.00605.40605.802016
2017606.40606.80607.201.38%3.47%609.00610.60612.40614.20616.00617.800.98%2.67%619.20620.60622.002017
2018623.20624.60626.001.24%3.19%627.60629.40631.00632.60634.40636.001.11%2.93%637.60639.00640.602018
2019642.20643.80645.40

From $500.00 to $645.40 over 10.0 years = 2.57% average annual increase compounded semi-annually.

Generated  05/01/18  10:10