{"title":"Number of flights by year and quarter","variables":[{"code":"year","text":"year","values":["0","1","2","3","4","5","6","7","8","9","10","11","12","13","14","15","16","17"],"valueTexts":["2017","2016","2015","2014","2013","2012","2011","2010","2009","2008","2007","2006","2005","2018","2019","2020","2021","2022"]},{"code":"quarter","text":"quarter","values":["0","1","2","3","4"],"valueTexts":["Q1","Q2","Q3","Q4","Total"]}]}