$100 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 100.001.79%4.80%100.40100.80101.20101.60102.00102.402.85%6.93%103.002005
2006103.56104.16104.76105.36105.960.50%2.21%106.16106.36106.56106.72106.92107.121.55%4.32%107.522006
2007107.88108.28108.64109.04109.441.21%3.63%109.76110.08110.44110.76111.08111.441.53%4.28%111.842007
2008112.24112.64113.04113.44113.842.42%6.07%114.40115.00115.56116.12116.72117.282.46%6.15%117.882008
2009118.48119.08119.68120.28120.88-2.78%0.00%120.88120.88120.88120.88120.88120.881.53%4.28%121.322009
2010121.72122.16122.60123.04123.480.77%2.75%123.76124.04124.32124.60124.88125.160.37%1.94%125.362010
2011125.56125.76125.96126.16126.362.30%5.83%126.96127.56128.20128.80129.44130.041.53%4.28%130.482011
2012130.96131.44131.88132.36132.841.10%3.41%133.20133.60133.96134.36134.72135.120.88%2.97%135.442012
2013135.80136.12136.44136.80137.120.59%2.39%137.40137.68137.92138.20138.48138.760.59%2.39%139.042013
2014139.32139.60139.88140.16140.400.92%3.05%140.76141.12141.48141.84142.20142.560.74%2.69%142.882014
2015143.20143.52143.84144.16144.48-0.80%0.00%144.48144.48144.48144.48144.48144.480.77%2.75%144.802015
2016145.12145.48145.80146.12146.480.08%1.36%146.64146.80146.96147.16147.32147.481.38%3.98%147.962016
2017148.44148.96149.44149.92150.400.98%3.17%150.80151.20151.60152.00152.40152.801.24%3.69%153.282017
2018153.72154.20154.68155.16155.601.11%3.43%156.04156.48156.92157.36157.84158.281.16%3.53%158.762018
2019159.20159.68160.12160.60161.080.70%2.61%161.44161.76162.12162.48162.84163.201.01%3.23%163.642019
2020164.08164.52164.96165.40165.840.53%2.27%166.16166.48166.76167.08167.40167.72

From $100.00 to $167.72 over 15.5 years = 3.36% average annual increase compounded semi-annually.

Generated  05/01/20  10:19