It's larger than that. 20% of the Italian economy is shadow, something around $400 billion, according to a recent study by the Institute for Applied Economic Research at the University of Tübingen in Germany (IAW).
The US has a $1 trillion shadow economy, around 5% +/-. Canada has a 10% shadow economy. Norway is up at 12%.
The US has a $1 trillion shadow economy, around 5% +/-. Canada has a 10% shadow economy. Norway is up at 12%.
https://www.forbes.com/sites/niallmccarthy/2017/02/09/where-...