(NY TIMES) Greek debt is over 170 percent of G.D.P. and still rising. Is that because Greece just kept on borrowing? Actually, no — Greek debt is up only 6 percent since 2009, although that’s partly because it received some debt relief in 2012. The main point, however, is that the ratio of debt to G.D.P. is up because G.D.P. is down by more than 20 percent. And why is GDP down? Largely because of the austerity measures Greece’s creditors forced it to impose.