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Data: Consumer Price Index for All Urban Consumers (CPI-U), rounded (1983–1984 = 100)
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Year
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Jan.
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Feb.
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Mar.
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Apr.
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May
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June
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July
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Aug.
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Sept.
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Oct.
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Nov.
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Dec.
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Average
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2004
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185
|
186
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187
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187
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189
|
190
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189
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190
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190
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191
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191
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190
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188.9
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2005
|
191
|
192
|
193
|
195
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194
|
195
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195
|
196
|
199
|
199
|
198
|
197
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195.3
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2006
|
198
|
199
|
200
|
201
|
202
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203
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204
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205
|
206
|
207
|
208
|
209
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203.5
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2007
|
210
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211
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211
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212
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213
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214
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215
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216
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216
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217
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218
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219
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214.5
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(1) Adjustment Factors (x) for 2005 ACS 1-Year Period Person Income (x is applied to prior 12 months’ reported income)
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January 2005 sample persons (income reported for 01/04–12/04)
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x = [195.3/((185 + … + 190)/12)] = 1.034
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February 2005 sample persons (income reported for 02/04–01/05)
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x = [195.3/((186 + … + 191)/12)] = 1.032
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.
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November 2005 sample persons (income reported for 11/04–10/05)
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x = [195.3/((191 + … + 199)/12)] = 1.006
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December 2005 sample persons (income reported for 12/04–11/05)
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x = [195.3/((190 + … + 198)/12)] = 1.003
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(2) Adjustment Factors (x) for 2006 ACS 1-Year Period Person Income
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For each monthly sample as in (1) x = [203.5/(average of factors for previous 12 months)]
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(3) Adjustment Factors (x) for 2007 ACS 1-Year Period Person Income
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For each monthly sample as in (1) x = [214.5/(average of factors for previous 12 months)]
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(4) Adjustment Factors for 2005–2007 ACS 3-Year Period Person Income
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a. For 2005 sample persons
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x = 214.5/195.3 = 1.09, x is multiplied by the adjusted 2005 income (1)
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b. For 2006 sample persons
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x = 214.5/203.5 = 1.05, x is multiplied by the adjusted 2006 income (2)
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c. For 2007 sample persons
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x = 214.5/214.5 = 1.00, x is multiplied by the adjusted 2007 income (3)
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(5) 2005–2007 ACS 3-Year Period Person Income Estimates for All Persons
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Calculated as ( 4.a + 4.b + 4.c)/3
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SOURCE: See http://www.bls.gov for monthly CPIs through February 2006; other months are hypothetical.
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