I think he is saying that is ours is lower than quite a few other countries. I am a bit confused by inclusion of the "euro area" when european countries have already been cited. Bit of a doubling up.
In his budget last Wednesday, George Osborne predicts that outstanding UK government debt will reach 85.6% of GDP by 2016-7.
So, during Mr Osborne's tenure in office, UK government debt is going to by 50% from approx 50% of GDP to 75%. Based on this trend, expect UK government debt to exceed 100% of GDP during the next parliament.