11 countries that desperately want people to have more sex

Demographers suggest that a country needs a fertility rate of just over two children per woman to hit "replacement fertility" — the rate at which new births fill the spaces left behind by deaths.

But because of certain cultural and economic forces, only about half of the world's 224 countries currently hit replacement fertility.

For those that don't, encouraging people to have sex can involve strategies that range from highly explicit to downright bizarre.

Denmark

If you aren't going to have a kid for your own family, Danes are told, at least do it for Denmark.

No, literally, do it for Denmark.

The small Nordic country has such a low fertility rate — about 1.73 children per woman — that Spies Rejser, a Danish travel company, has come up with ingenious incentives to persuade women to get pregnant.

Now it has come up with a sexy campaign video titled "Do it for Mom," which guilt trips couples into having kids to give their precious mothers a grandchild.

Russia

Vladimir Putin once brought Boyz II Men to Moscow to rile men up right before Valentine's Day.

Can anyone blame him? As Tech Insider recently reported, the country is experiencing a perfect demographic storm. Men are dying young. HIV/AIDS and alcoholism are crippling the country. And women aren't having babies.

The problem got so bad that in 2007 Russia declared September 12 the official Day of Conception.

On the Day of Conception, people get the day off to focus on having kids. Women who give birth exactly nine months later, on June 12, win a refrigerator.

Japan

Japan's fertility rate has been below replacement since 1975.

To offset that decades-long trend, in 2010 a group of

If men and women begin thinking of themselves as potential fathers and mothers, the students theorized, they'll feel emotionally ready to take a stab at the real thing.

Romania

The 1960s in Romania were a perilous time for couples.

Population growth flatlined, prompting the government to impose a 20% income tax for childless couples and to implement provisions that made divorce nearly impossible.

The idea was: If you weren't contributing to the communist state by creating future laborers, you had to contribute with dollars instead.

The 1980s weren't much better, however — women faced forced gynecological exams that were performed by "demographic command units" to ensure pregnancies went to term. When Romanian leadership changed in 1989, the brutal policy finally came crashing down. But at 1.31 children per woman, the fertility rate is still well below replacement.

Singapore

Singapore has the lowest fertility rate in the world, at just 0.81 children per woman.

On August 9, 2012, the Singaporean government held National Night, an event sponsored by the breath-mint company Mentos, to encourage couples to "let their patriotism explode."

The country has also placed a limit on the number of small one-bedroom apartments available for rent to encourage people to live together and, presumably, procreate.

Each year the government spends roughly $1.6 billion on programs to get people to have more sex.

South Korea

On the third Wednesday of every month, South Korean offices shut their lights off at 7 p.m. It's known as Family Day.

With a fertility rate of just 1.25 children per woman, the country takes any steps it can to promote family life — even offering cash incentives to people who have more than one child.

Turkey

Turkey's government takes the idea of free cash even further.

New parents receive roughly $130 for their first child, $170 for their second, and $260 for the third. The policy tracks with President Erdogan's goal of each family bearing at least three children.

In 2015, when the policy was announced, Prime Minister Davutoğlu revealed several other benefits to working moms, such as part-time work at full pay.

India

India as a whole has no problem with fertility — the country's ratio of 2.48 children per woman is well above replacement.

But the number of people in India's Parsis community is dwindling — it shrank from roughly 114,000 people in 1941 to just 61,000 in 2001, according to the 2001 census.

That problem led to a series of provocative ads in 2014, including one that read "Be responsible — don't use a condom tonight." Another, geared toward men who lived at home, asked, "

Italy

With a fertility rate of 1.43 — well below the European average of 1.58 — Italy has taken a controversial approach to encourage citizens to have more kids.

As Bloomberg reports, the country has been running a series of ads reminding Italians that time might be running out and that kids don't just come from nowhere.

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Hong Kong

With a fertility rate of just 1.18 children per woman, Hong Kong faces the same challenge as many industrialized countries: Without enough young people to replace aging citizens, populations are dwindling and economic growth is slowing.

In 2013, the country proposed giving cash handouts to couples to encourage them to have kids.

The idea took its cue from Singapore, where parents receive a "baby bonus" of about $4,400 for their first two children and $5,900 for their third and fourth.

But in Hong Kong, the plan never came to life.

Spain

Fertility rates in Spain are creeping downward while unemployment is rising: About half of all young people don't have a job. It's the second-highest rate in Europe, behind Greece.

To combat the worrying trends, the Spanish government hired

11 countries that desperately want people to have more sex

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