Digram showing the trends in any disorder. All three lines, one representing all, one representing girls and one representing boys all have a steady incline. The ‘boys’ line starts at 11.8% in 1999 and gets to 12.2% by 2004, reaching 13.1% by 2017. The ‘all’ line begins at 9.7% in 1999, reaches 10.1% in 2004 and gets to 11.2% by 2017. The ‘girls’ line starts at 7.5% and is at 7.9% in 2004. It then reaches 9.3% by 2017.