Besides, 67 crore Indians comprising the population's poorest half saw their wealth rise by just 1 per cent, as per the survey released by the international rights group Oxfam hours before the start of the annual congregation of the rich and powerful from across the world in this resort town.
The situation appears even more grim globally, where 82 per cent of the wealth generated last year worldwide went to the 1 per cent, while 3.7 billion people that account for the poorest half of population saw no increase in their wealth.
Last year's survey had showed that India's richest 1 per cent held a huge 58 per cent of the country's total wealth -- higher than the global figure of about 50 per cent.
This year's survey also showed that the wealth of India's richest 1 per cent increased by over Rs 20.9 lakh crore during 2017 -- an amount equivalent to total budget of the central government in 2017-18, Oxfam India said.
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"2017 saw an unprecedented increase in the number of billionaires, at a rate of one every two days. Billionaire wealth has risen by an average of 13 per cent a year since 2010 -- six times faster than the wages of ordinary workers, which have risen by a yearly average of just 2 per cent," it said.
In India, it will take 941 years for a minimum wage worker in rural India to earn what the top paid executive at a leading Indian garment firm earns in a year, the study found.
Citing results of the global survey of 70,000 people surveyed in 10 countries, Oxfam said it demonstrates a groundswell of support for action on inequality and nearly two-thirds of all respondents think the gap between the rich and the poor needs to be urgently addressed.
With Prime Minister Narendra Modi attending the WEF meeting in Davos, Oxfam India urged the Indian government to ensure that the country's economy works for everyone and not just the fortunate few.
Oxfam also sought sealing of the "leaking wealth bucket" by taking stringent measures against tax evasion and avoidance, imposing higher tax on super-rich and removing corporate tax breaks.
The survey respondents in countries like the US, UK and India also favoured 60 per cent pay cut for CEOs.
The key factors driving up rewards for shareholders and corporate bosses at the expense of workers' pay and conditions, Oxfam said, include erosion of workers' rights; excessive influence of big business over government policy- making; and the relentless corporate drive to minimise costs in order to maximise returns to shareholders.
It also said India's top 10 per cent of population holds 73 per cent of the wealth and 37 per cent of India's billionaires have inherited family wealth. They control 51 per cent of the total wealth of billionaires in the country.
Oxfam India CEO Nisha Agrawal said it is alarming that the benefits of economic growth in India continue to concentrate in fewer hands.
The survey also showed that women workers often find themselves at the bottom of the heap and nine out of 10 billionaires are men.
In India, there are only four women billionaires and three of them inherited family wealth.