According to a January 2013 Oxfam International report titled “The cost of inequality: how wealth and income extremes hurt us all,” “The top 100 billionaires added $240 billion to their wealth in 2012- enough to end world poverty four times over” [https://www.oxfam.org/sites/www.oxfam.org/files/cost-of-inequality-oxfam-mb180113.pdf].
By January 2018, Oxfam International reported, “Last year saw the biggest increase in billionaires in history, one more every two days. Billionaires saw their wealth increase by $762bn in 12 months. This huge increase could have ended global extreme poverty seven times over. 82% of all wealth created in the last year went to the top 1%, while the bottom 50% saw no increase at all” [https://www.oxfam.org/sites/www.oxfam.org/files/file_attachments/bp-reward-work-not-wealth-220118-summ-en.pdf].