Half of National Lottery in Spain Sold at Christmas (image) Carlos III University of Madrid Share Print E-Mail Caption The Christmas Lottery accounts for around 50 percent of the National Lottery's annual sales and "El Niño" around 13 percent, while the remaining 36 percent comes from the hundred or so drawings normally held on Thursdays and Saturdays the rest of the year. These are some of the data highlighted in the Spanish Gaming Yearbook 2012-2013, recently presented by the Universidad Carlos III de Madrid and the CODERE Foundation. Credit uc3m Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.