According to a study published by Amadeus_IT_Group and IdeaWorksCompany, airlines’ ancillary revenues were projected to increase from $13.5 billion in 2009 to $22.6 billion in 2010.[10] In 2009, United Airlines had $1.5 billion in ancillary revenues; for many airlines ancillary revenues accounted for a huge part of their total revenues: Allegiant Air (29.2%), Spirit Airlines (23.9%) and RyanAir (22.2%).[11] For 2018, the financial results have greatly increased with the following top performers noted:[12]