Sort the ytd series so that most recent is always drawn on top
Sort the ytd series so that most recent is always drawn on top

unicef/polio,SeedScientific/polio,unicef/polio,unicef/polio,unicef/rhizome,unicef/rhizome,SeedScientific/polio,unicef/rhizome,SeedScientific/polio,unicef/polio,SeedScientific/polio,SeedScientific/polio,unicef/rhizome