Of course, there is much more to Darien, but no need to go into huge detail as its water under the bridge. The main point is that Scotland had zero debt. The debt lay with the speculators who took payment from England to vote for Union. What is important is today and the future. Today, I see a country with ambition, which is successful in selling its products worldwide. Recently, the treasury said Salmonds plans to re industrialise were pie in the sky. I don't think you will find many other European countries in agreement. By way of example, Norway, where the average salary is £35k per annum, builds over 100 ships per year. Under European law we have 200 ferries which need replaced. Scotland's share of the cost of Trident would cover the cost of 100 of those ships built on the Clyde. That's a lot of high value jobs.
Office of National Statistics The data for the last 30 years shows Scotland is a viable economic entity, without oil.
I know about the ONS. I've worked on one of their offices, a few years ago, and a mate of mine is based there.