Immigration to Singapore also fell sharply after Singapore independence due to tighter control of immigration from Malaysia and other countries. The population increase became dominated by native births with 315,400 in the 1970–1980 period due to natural increase compared to 24,000 from net migration. However, a lower rate of natural growth in population and the need for low-skill labour resulted in a deliberate shift in policy by the Singapore government to allow more foreigners to live and work in the country, and net migration increased in the 1980–1990 period to nearly 200,000. By the decade of 1990–2000, the net migrant number of over 600,000 had surpassed the natural growth of the population, and accounted for nearly two-thirds of the population increase. The same high level of immigration is also seen in the next decade with 664,083 net migration recorded. Due to the continued low birth rate, amongst other reasons, the Singapore government has varied its immigration policy over the years. As the demand for labour grew with industrialisation, foreign talent with professional qualifications as well as less-skilled foreign workers has made up a significant and increasing proportion of Singapore's total population since the 2000s and 2010s. Curbs on immigration, however, began to be implemented in the 2010s to ease increasing social issues arising from the high level of immigration. Population planning The post-war boom in births led to an interest in family planning, and by 1960, the government publicly funded and supported family planning programmes. After independence in 1965, the birth rate had fallen to 29.5 per thousand individuals, and the natural growth rate had fallen to 2.5%. Birth rates in the 1960s were still perceived as high by the government; on average, a baby was born every 11 minutes in 1965. Kandang Kerbau Hospital (KKH)—which specialised in women's health and was the most popular hospital to have children—saw over 100 deliveries per day in 1962. In 1966, KKH delivered 39835 babies, earning it a place in the Guinness Book of World Records for "largest number of births in a single maternity facility" for ten years. Because there was generally a massive shortage of beds in that era, mothers with routine deliveries were discharged from hospitals within 24 hours. In September 1965 the Minister for Health, Yong Nyuk Lin, submitted a white paper to Parliament, recommending a "Five-year Mass Family Planning programme" that would reduce the birth rate to 20.0