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Brief principles of macroeconomics _部分2详解
Brief principles of macroeconomics _部分2
C H A P T E R
12
Money Growth and Inflation
oday, if you want to buy an ice-cream cone, you’ll need at least a couple
of dollars, but that has not always been the case. In the 1930s, my grand-
Tmother ran a sweet shop in Trenton, New Jersey, and she sold ice-cream
cones in two sizes. A cone with a small scoop of ice cream cost three cents. Hungry
customers could buy a large scoop for a nickel.
You may not be surprised at the increase in the price of ice cream. In our econ-
omy, most prices tend to rise over time. This increase in the overall level of prices
is called inflation. Earlier in the book, we examined how economists measure the
inflation rate as the percentage change in the consumer price index CPI , the GDP
deflator, or some other index of the overall price level. These price indexes show
that, over the past 70 years, prices have risen on average about 4 percent per year.
Accumulated over so many years, a 4 percent annual inflation rate leads to a six-
teenfold increase in the price level.
Inflation may seem natural and inevitable to a person who grew up in the United
States during recent decades, but in fact, it is not inevitable at all. There were long
periods in the 19th century during which most prices fell―a phenomenon called
deflation. The average level of prices in the U.S. economy was 23 percent lower in
1896 than in 1880, and this deflation was a major issue in the presidential election
of 1896. Farmers, who had accumulated large debts, suffered when the fall in crop
prices reduced their incomes and thus their ability to pay off their debts. They
advocated government policies to reverse the deflation.
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