Most of the world’s
advanced economies will face challenges resulting from aging populations
over the next few decades. Japan is no exception in this regard. The average Japanese woman can now
expect to live to age eighty-five; and the average Japanese man will see
his seventy-eighth birthday. The country’s population over the age of one
hundred is now in the tens of thousands.
The problem, of
course, is that fewer Japanese are being born. Japan, like the United
States, experienced a long postwar baby boom. In 1946, Japan’s population
was around 76 million. Over the next two decades, the population grew
rapidly. By the end of the 1960s, there were more than 100 million people
in Japan.
By the early 1980s,
however, Japan had slipped into the demographic pattern now common to
advanced nations: smaller families, more adult singles, and longer life
spans. In 1981, Japan’s population was growing at a rate of 3.5%.
At the end of the decade, the growth rate had fallen to 2%. A little more
than ten years later, in 2003, the rate had fallen to 1.3%.
In 2005, Japan’s
population was 127,417,244. Most demographers expect the population will
peak at around 130 million, and then begin decreasing. Based on the
assumption that current birthrates trends continue, some demographers have
predicted that Japan will have less than 100 million people in 2100, and
that the middle-aged and elderly will comprise a majority of the
population. If this scenario comes to fruition, it will impose huge
burdens on Japan’s pension and medical care systems, and potentially put
the brakes on economic growth. A population in which young people are in
the minority could also change the very nature of society, given that
societies generally depend on the energy and drive of their younger
members.
It is difficult to
accurately predict the long-term implications of
Japan’s low birthrates. Many changes could occur in the interim to offset the
aging of the population. When we examine the writings of the past, we find
that many dire predictions about population (the writings of Malthus and
Paul Ehrlich come immediately to mind) never came to pass.
First of all,
birthrates could increase again. An extended period of low birthrates is
not unprecedented in Japan. For more than a century during the Edo Period
(1603 – 1867), Japan’s population barely
budged. Between 1720 and 1830, the population grew from 26.1 million to
27.2 million, an increase of a little more than 1 million people in a
hundred years. Then, as now, Japanese married later and reared smaller
families. In this way, the present lackluster birthrate could be a
temporary reaction to transitory economic and social phenomena.
Furthermore, there is
no reason to assume that ages perceived as “old” today will be quite so
“old” in the future. Medical advances could extend the productive years of
everyone, so that the population of the future—though older in years—is
just as vibrant as the population today. This scenario is especially
likely in Japan, given the country’s already advanced healthcare system.
A third possibility
is an increase in immigration from outside
Japan. In the United States and Canada, the
birthrates of the native-born populations are far lower than they were in
the immediate postwar years, but overall population growth rates are still
high because of immigration. So far, the Japanese government has balked at
the idea of opening the doors wide to outsiders. (There are about 1.2
million foreign residents in Japan.) But this is another situation that is
subject to change in the future.