some of the structural drivers of inflation have also weakened. Trade unions have become less powerful. Loss-making state industries have been privatized. But, perhaps most importantly of all, the social constituency with an interest in positive real returns on bonds has grown. In the developed world a rising share of wealth is held in the form of private pension funds and other savings institutions that are required, or at least expected, to hold a high proportion of their assets in the form of government bonds and other fixed income securities. In 2007 a survey of pension funds in eleven major economies revealed that bonds accounted for more than a quarter of their assets, substantially lower than in past decades, but still a substantial share.71 With every passing year, the proportion of the population living off the income from such funds goes up, as the share of retirees increases.