dropped below 0.50% for the first time since 1960 shrunk shrunk more than 4% dropped below 0.50% for the first time since 1960 dropped below 0.50% for the first time since 1960 more than 4% shrunk dropped below 0.50% for the first time since 1960 more than 4% dropped below 0.50% for the first time since 1960 dropped below 0.50% for the first time since 1960 more than 4 per cent dropped below 0.50% for the first time since 1960 shrunk dropped below 0.50% for the first time since 1960 dropped below 0.50% for the first time since 1960