Assignment: Taxing Questions for Greeks

No-one likes paying tax - but avoiding it is a way of life for many people in Greece, whose black economy is estimated to be worth more than a quarter of its GDP. This certainly hasn't helped the government as it struggles to bring down its budget deficit - which currently stands at more than 12%. So why do so many Greeks evade tax? For Assignment Ed Butler travels to Athens to try to get to the heart of the problem.