See the problem is that using the GDP to debt ratios is a bit misleading in a sense. If your debt is still going up every year then if there are economic problems that debt still needs to get paid and your debt to GDP ratio will go up. Although having a growing GDP is essential to a healthy economy and is needed to help with paying back the debt the problem is that government after government have only really been doing one thing ... growing the outstanding debt year after year. If our country gets into any serious economy challenges I'm not that convinced we will be able to borrow our way into good times anymore.