Bitcoin is important to a global industry worth around 2.8 trillion USD.

"A comparatively simple crime-economic model, constructed from readily available international databases, closely predicts a range of such expert assessments, and appears to offer a framework for determining and monitoring the size of money laundering flows around the world. Further research is required to complete the model, but the nature of that research is made clear, and it appears that existing data sources are likely to be adequate.

Initial output from the model suggests a global money laundering total of $2.85 trillion per year, heavily concentrated in Europe and North America."

http://www.johnwalkercrimetrendsanalysis.com.au/ML%20method....