Wade Ren's contribution in Trends

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Demographic projections and trade implications

Tags: demographics trend on 05-22-2008 -Cached -About Shared by:Wade Ren

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To summarize the raw numbers, China’s population is expected to grow from 1.32 billion today to 1.46 billion in 2030, after which it will decline slowly, to around 1.42 billion in 2050. Its working population is currently around 840 million. This component of the population will rise in the next ten years to around 910 million and then will decline quite rapidly to around 790 million by 2050.
posted by Wade Ren on 05-22-2008
The graph below shows the composition of China’s population by age group. Needless to say the most dramatic change is the explosive growth of the over-65 population, followed by the decline in the share of the young. Another way of understanding this is to note that China’s median age basically climbs over this period from 24 to 45 (which, by the way, may have favorable consequence for long-term political stability).
posted by Wade Ren on 05-22-2008
I don’t have the figures yet from before 1990, but looking at other sources I would guess that China’s working population grew by about 2% or more annually during the 1970s and 1980s. In the 1990s, as the table indicates, the growth rate of the working population slowed to 1.72%, declining further in the current decade to around 1.42% on average. The number of working Chinese keeps growing until around the middle of the next decade, and then begins to decline by about half a percent a year.
posted by Wade Ren on 05-22-2008
All this has important implications both for nominal growth rates and per capita growth rates in the next few decades. For one thing, a country’s GDP growth rate can be expressed as a factor of the growth rate of its working population and the growth rate of average productivity per worker. As the growth rate of the working population swings from positive to negative – by a little more than 2%, depending on what periods you compare – this will have a commensurate impact on Chinese GDP growth rates, i.e. all other things being equal (which of course they are not). China’s equilibrium growth rate should be about 2% lower than the equilibrium growth rate of the past two or three decades.
posted by Wade Ren on 05-22-2008
This implies that over the last three decades China has had a demographic bias towards trade surpluses (working population, a proxy for production, grew faster than total population, a proxy for consumption), but over the next three decades it is likely to have a demographic bias towards trade deficits.
posted by Wade Ren on 05-22-2008
Three years ago I argued in a Wall Street Journal OpEd piece that because of the aging and declining populations of Europe and Japan (and to a lesser extent China and Russia), compared to the growing population and relatively stable age distribution in the US, it was not unreasonable for the former countries to run large current account surpluses with the US since they would need the accumulated claims against the US to pay for the current account deficits they would need to run to manage their demographic adjustments. This is why I have never been terribly worried about the sustainability of the US trade deficit. In the next decade it is likely that demographic changes will create pressures to reverse those US trade deficits.
posted by Wade Ren on 05-22-2008

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Wade Ren's contribution in Trends

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Wade Ren's contribution in Trends

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