Thailand has tried cash bonuses and tax incentives to boost the country’s birth rate, but on Valentine’s Day today it adopted a new approach: Handing out vitamin pills. Thailand faces huge challenges in the years ahead as the country’s overall population growth slows, causing the workforce to shrink dramatically due to a falling birth rate and an ageing population. Thailand is currently ranked the third most rapidly ageing population in the world.  The number of people aged 60 and over in Thailand now stands at about eight million, accounting for 13 percent of the population.