Global debt is at elevated levels, but isn't high enough to draw comparisons with the 2008 financial crisis just yet.

Risky corporate debt, particularly in the form of leveraged loans, has been on the rise for a number of years, with analysts suggesting the recent build up could be a significant risk to global GDP growth.

Since 2015, world private sector debt has risen by around 15% of world GDP — a level higher than it was prior to the global financial crisis, according to Oxford Economics .

Growing global debt is a major concern for the world economy because recent evidence has indicated that credit booms often end in busts of seismic proportions. A recent study found that of 175 such credit booms a staggering 70% have ended in busts, a worrying sign for the current debt buildup.

In a sample of large economies, up to 60% of GDP is in economies with "risky" corporate debt and up to 30% of GDP is in economies with risky household debt. The boom in emerging market debt is coupled with a rise in increasingly risky debt in Europe and the US.

Oxford Economics' research also suggests that the countries at the highest risk are Hong Kong, China, France, Canada, and Chile.