Complex sentence: The São Paulo Metro last year reached the mark of 11.5 million passengers on mile of line, 15% higher than in 2008, when 10 million users were taken per mile.
Split into simpler sentences: The São Paulo Metro last year reached the mark of 11.5 million passengers every mile of line. The number is 15% higher than in 2008, when 10 million users were taken per mile.