92 percent of the world's currency is digital

This means that most of the money you earn, transact with, use to buy goods/services and so on exists only on computers and hard drives. Only an estimated 8 per cent of currency globally is physical money.

All the black money piles come from within this 8 per cent. This is a fair estimate that economists seem to agree on though, not an exact figure. This low percentage seems absurd but when you stop to think, it makes sense considering that most large transactions are done electronically anyway.

Banks store electronically too and the 92 per cent includes all kinds of transactions done using credit/debit cards and wire transfers. Might be a good idea to revisit all those hacker movies where a nerdy computer hacker manages to siphon billions off in just a few minutes.