Re: Oil based economy?
"Scotland contributes 9.6% of UK tax revenue "
Isn't that counting oil and gas? Which Scotland doesn't actually produce - it just happens to be offshore. And of course is now much lower in revenue. And much of the receipts of which would be tied up paying off your share of the national debt. GERS has estimated Scotland's share of debt would be £92 billion which is 62% of estimated GDP.
According to the BBC as a percentage of the UK, Scotland contributes 8.2% in taxes (excluding North Sea oil and gas revenue), but receives 9.3% of government spending.
Also Scotland has among the shortest life expectancies in Western Europe - meaning that your future social and healthcare costs would be huge.