Government determined to increase population to 7 mil in 2030.

[yeokiwi]

Closely linking to birth rate is the % of singlehood. There will be no child birth(at least in Singapore context) if there is no marriage.

http://www.singstat.gov.sg/stats/themes/...f2012a.pdf

Singlehood rates have risen over the years. Among citizens
aged 30-34 years, the proportion of singles was higher in 2011 (44.2%
for males and 31.0% for females) compared to 2001 (33.5% for males
and 22.3% for females) (Chart 4).

Obviously, housing, salary and mismatch in educational levels may have impacts on singlehood.

There is no statistics on the income level versus birth rate. If there is, it will give some indications on whether $$$ is the prime factor in lower fertility rate.

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Is Japan on a doom path? Already one decade of low or no growth, plus a severe disaster. Are they changing the policy to allow more immigrants? If their government do that, I think it will topple immediately.

But that does not mean that they are not having a declining population problem or they are not worried. It is just that immigration cannot solve their problem even if they want to.
http://www.businessweek.com/globalbiz/bl...ulati.html

How about Sweden and Norway? It's population is also aging rapidly. Low birth rate, despite favourable policies encouraging childbirth. Did they mass import?

http://data.worldbank.org/indicator/SP.DYN.TFRT.IN
Both countries are fine. Both countries' TFR is 2.0. The population will decline at a very very slow pace.
A little import of immigrants will solve the problem.