Fifty years ago, at the 1975 men's Tour de France, just 13 riders on the start line hailed from nations outside of the five that have dominated much of professional cycling's history, France, Italy, Spain, Belgium and the Netherlands.
Ten years on, in 1985, that number had more than doubled to 30; it was 51 by 1995, and at this year's Tour, the figure had climbed to 82 of the 184 starters, with the spread of nations represented sprawling with each passing decade.
