time prices inflation inflation is a sustained increase in the prices of goods and services (or the...
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Time
pricesInflation
Inflation is a sustained increasein the prices of goods and services(or the cost of living). To measure
inflation, we look at changes in theprice of a market basket of goodsor services households typically
purchase with their income
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THE CONSUMER PRICE INDEX
• Measuring Inflation– Inflation rate– The percentage change in the price level from one
year to the next.
Inflation rate = = 16.7 percent140 120
120x 100
CPI in current year CPI in previous year
CPI in previous year
x 100Inflation rate =
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Computing the Inflation Rate for 2007The CPI was equal
to 203.30 in December 2006. In December 2007 it
was 211.680.
%12.410030.203
30.203680.2112007
P
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Japan
Britain
Euro Area
Russia
Turkey
Pakistan
China
Australia
Argentina
U.S.
0 2 4 6 8 10 12
Inflation In Selected Countries
20072006
Percent
Source: The Economist
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The inflation myth
Inflation cannot by itself decrease
average real income. Inflation can shift purchasing power
from some groups to others
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Inflation in not an equal opportunity villain. That is,
inflation arbitrarily, and unfairly, redistributes real
purchasing power from some groups to others.
Redistributive costs of inflation
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The race to stay ahead of inflation
•Inflation erodes the purchasing power of income and sets off a race to stay ahead of the cost of living.
•Teachers, fireman, truck drivers, nurses, accountants, plumbers, social security recipients, and others strive to increase their incomes so as not to suffer a decrease in their standard of living.
•Some groups do better than others.
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MachinistsJob description: Set up and operate a variety of machine tools to produce precision parts and instruments.
Mean CPI
Year Annual Wage (1982-84 = 100)
1995 $31,270 152.4
2005 $34,790 196.4
Source: Bureau of Labor Statistics
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Are machinists better off in 2005?
518,20$1004.152
270,31$100
CPI
WagesNominal WagesReal
1995
19951995
714,17$1004.196
790,34$100
CPI
WagesNominal WagesReal
2005
20051995
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Why are we smiling? Because our social
security benefits are indexed to the CPI
Why doesn’t Congress index the minimum wage to the CPI?
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NominalReal Value
Year Value (1982-84)
1938 $0.25 $1.77
1949 0.40 1.68
1955 0.75 2.80
1961 1.15 3.85
1966 1.25 3.86
1974 2.00 4.06
1978 2.65 4.06
1989 3.35 2.70
1996 4.75 3.03
2006 5.15 2.53
2007 5.85 2.76
Value of the Federal Minimum Wage
Source: U.S. Department of Labor
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Unexpected inflation redistributes real income from lenders to borrowers
•Repayments schedules for most debt contracts are fixed in nominal or money terms—that is, debts are not indexed to inflation.
•Inflation erodes the real value of repayments.
Savings & Loan institutions lost
money on long term mortgages in the70s
and 80s.
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We bought this house in 1957 for $19,000. We
financed the house on a 30 year mortgage note at 3.5 percent interest. Can you guess what our monthly payment was?
Answer: $85.32
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Demand-pull inflationPr
ice
Inde
x
Real GDP0
AS
ADAD’
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Cost-push inflationPr
ice
Inde
x
Real GDP0
AS
AD
AS’
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70 71 72 73 74 75 76 77 78 79 80 81 82 83 840
5
10
15
20
25
30
35
40
Price of 34 Degree Saudi Crude Oil
Year
Dol
lars
The 70s Oil Shock
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The Story of Joseph suggests that buffer stock programs are the way to prepare for supply shocks
•USDA buffer stock program•Strategic petroleum reserve