The US economy will officially become 3 per cent bigger in July as part of a shake-up that will for the first time see government statistics take into account 21st century components such as film royalties and spending on research and development http://link.ft.com/r/ZE9K33/Q3OT44/GKHJIN/DWA6I8/HI8FE3/N9/h?a1=2013&a2=4&a3=21